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42400306 = 2131630781
BaseRepresentation
bin1010000110111…
…1101000110010
32221210011021201
42201233220302
541323302211
64112441414
71023253024
oct241575062
987704251
1042400306
1121a2aa83
121224926a
138a27250
1458ba014
153ac80c1
hex286fa32

42400306 has 8 divisors (see below), whose sum is σ = 68492844. Its totient is φ = 19569360.

The previous prime is 42400297. The next prime is 42400321. The reversal of 42400306 is 60300424.

42400306 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 35509681 + 6890625 = 5959^2 + 2625^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

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, 815365 + ... + 815416.

Almost surely, 242400306 is an apocalyptic number.

42400306 is a deficient number, since it is larger than the sum of its proper divisors (26092538).

42400306 is a wasteful number, since it uses less digits than its factorization.

42400306 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1630796.

The product of its (nonzero) digits is 576, while the sum is 19.

The square root of 42400306 is about 6511.5517351857. The cubic root of 42400306 is about 348.7035191112.

The spelling of 42400306 in words is "forty-two million, four hundred thousand, three hundred six".

Divisors: 1 2 13 26 1630781 3261562 21200153 42400306