42553830 has 32 divisors (see below), whose sum is σ = 111414528. Its totient is φ = 10316000.

The previous prime is 42553829. The next prime is 42553843. The reversal of 42553830 is 3835524.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

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, 64146 + ... + 64805.

It is an arithmetic number, because the mean of its divisors is an integer number (3481704).

Almost surely, 2^42553830 is an apocalyptic number.

42553830 is an abundant number, since it is smaller than the sum of its proper divisors (68860698).

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

42553830 is a wasteful number, since it uses less digits than its factorization.

42553830 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128972.

The product of its (nonzero) digits is 14400, while the sum is 30.

The square root of 42553830 is about 6523.3296712645. The cubic root of 42553830 is about 349.1238767372.

The spelling of 42553830 in words is "forty-two million, five hundred fifty-three thousand, eight hundred thirty".