42655290 has 32 divisors (see below), whose sum is σ = 102582720. Its totient is φ = 11351424.

The previous prime is 42655279. The next prime is 42655331. The reversal of 42655290 is 9255624.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17422 + ... + 19718.

It is an arithmetic number, because the mean of its divisors is an integer number (3205710).

Almost surely, 2^42655290 is an apocalyptic number.

42655290 is an abundant number, since it is smaller than the sum of its proper divisors (59927430).

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

42655290 is a wasteful number, since it uses less digits than its factorization.

42655290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2926.

The product of its (nonzero) digits is 21600, while the sum is 33.

The square root of 42655290 is about 6531.1017447288. The cubic root of 42655290 is about 349.4011255282.

The spelling of 42655290 in words is "forty-two million, six hundred fifty-five thousand, two hundred ninety".