42036390 has 48 divisors (see below), whose sum is σ = 119233296. Its totient is φ = 10190400.

The previous prime is 42036389. The next prime is 42036409. The reversal of 42036390 is 9363024.

42036390 is a `hidden beast` number, since 4 + 20 + 3 + 639 + 0 = 666.

It is a congruent number.

It is an unprimeable number.

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, 20241 + ... + 22220.

It is an arithmetic number, because the mean of its divisors is an integer number (2484027).

Almost surely, 2^42036390 is an apocalyptic number.

42036390 is an abundant number, since it is smaller than the sum of its proper divisors (77196906).

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

42036390 is a wasteful number, since it uses less digits than its factorization.

42036390 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42485 (or 42482 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 27.

The square root of 42036390 is about 6483.5476399885. The cubic root of 42036390 is about 347.7030264687.

The spelling of 42036390 in words is "forty-two million, thirty-six thousand, three hundred ninety".