42392040 has 64 divisors (see below), whose sum is σ = 133876800. Its totient is φ = 10708992.

The previous prime is 42392027. The next prime is 42392069. The reversal of 42392040 is 4029324.

It is a happy number.

42392040 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 42392040.

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 15 ways as a sum of consecutive naturals, for example, 7017 + ... + 11576.

It is an arithmetic number, because the mean of its divisors is an integer number (2091825).

Almost surely, 2^42392040 is an apocalyptic number.

42392040 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

42392040 is an abundant number, since it is smaller than the sum of its proper divisors (91484760).

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

42392040 is a wasteful number, since it uses less digits than its factorization.

42392040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18626 (or 18622 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 24.

The square root of 42392040 is about 6510.9169861088. The cubic root of 42392040 is about 348.6808575561.

The spelling of 42392040 in words is "forty-two million, three hundred ninety-two thousand, forty".