42280788 has 72 divisors (see below), whose sum is σ = 111511456. Its totient is φ = 12450240.

The previous prime is 42280787. The next prime is 42280817. The reversal of 42280788 is 88708224.

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 (42280783) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 53331 + ... + 54117.

Almost surely, 2^42280788 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 42280788, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (55755728).

42280788 is an abundant number, since it is smaller than the sum of its proper divisors (69230668).

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

42280788 is a wasteful number, since it uses less digits than its factorization.

42280788 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 853 (or 840 counting only the distinct ones).

The product of its (nonzero) digits is 57344, while the sum is 39.

The square root of 42280788 is about 6502.3678763970. The cubic root of 42280788 is about 348.3755689015.

The spelling of 42280788 in words is "forty-two million, two hundred eighty thousand, seven hundred eighty-eight".