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42086388 = 2233507199
BaseRepresentation
bin1010000010001…
…0111111110100
32221012012200010
42200202333310
541233231023
64102020220
71020504561
oct240427764
987165603
1042086388
1121836143
1212117670
1389473b6
145837868
153a65093
hex2822ff4

42086388 has 12 divisors (see below), whose sum is σ = 98201600. Its totient is φ = 14028792.

The previous prime is 42086383. The next prime is 42086393. The reversal of 42086388 is 88368024.

42086388 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (42086383) and next prime (42086393).

It is a tau number, because it is divible by the number of its divisors (12).

It is a hoax number, since the sum of its digits (39) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42086383) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1753588 + ... + 1753611.

Almost surely, 242086388 is an apocalyptic number.

It is an amenable number.

42086388 is an abundant number, since it is smaller than the sum of its proper divisors (56115212).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

42086388 is a wasteful number, since it uses less digits than its factorization.

42086388 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3507206 (or 3507204 counting only the distinct ones).

The product of its (nonzero) digits is 73728, while the sum is 39.

The square root of 42086388 is about 6487.4022535989. The cubic root of 42086388 is about 347.8408242841.

The spelling of 42086388 in words is "forty-two million, eighty-six thousand, three hundred eighty-eight".

Divisors: 1 2 3 4 6 12 3507199 7014398 10521597 14028796 21043194 42086388