42690368 has 42 divisors (see below), whose sum is σ = 98551746. Its totient is φ = 18294528.

The previous prime is 42690367. The next prime is 42690413. The reversal of 42690368 is 86309624.

It can be written as a sum of positive squares in only one way, i.e., 21603904 + 21086464 = 4648^2 + 4592^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42690367) 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 5 ways as a sum of consecutive naturals, for example, 3671 + ... + 9942.

Almost surely, 2^42690368 is an apocalyptic number.

It is an amenable number.

42690368 is an abundant number, since it is smaller than the sum of its proper divisors (55861378).

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

42690368 is a wasteful number, since it uses less digits than its factorization.

42690368 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13639 (or 13622 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 38.

The square root of 42690368 is about 6533.7866509399. The cubic root of 42690368 is about 349.4968771104.

The spelling of 42690368 in words is "forty-two million, six hundred ninety thousand, three hundred sixty-eight".