42394530 has 32 divisors (see below), whose sum is σ = 102219264. Its totient is φ = 11252736.

The previous prime is 42394511. The next prime is 42394579. The reversal of 42394530 is 3549324.

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

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, 3522 + ... + 9858.

It is an arithmetic number, because the mean of its divisors is an integer number (3194352).

Almost surely, 2^42394530 is an apocalyptic number.

42394530 is an abundant number, since it is smaller than the sum of its proper divisors (59824734).

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

42394530 is a wasteful number, since it uses less digits than its factorization.

42394530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6570.

The product of its (nonzero) digits is 12960, while the sum is 30.

The square root of 42394530 is about 6511.1082006061. The cubic root of 42394530 is about 348.6876842963.

It can be divided in two parts, 42394 and 530, that added together give a palindrome (42924).

The spelling of 42394530 in words is "forty-two million, three hundred ninety-four thousand, five hundred thirty".