42231530 has 16 divisors (see below), whose sum is σ = 82927584. Its totient is φ = 15356880.

The previous prime is 42231499. The next prime is 42231559. The reversal of 42231530 is 3513224.

It is a happy number.

It is a super-2 number, since 2×42231530² = 3567004252281800, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 191852 + ... + 192071.

It is an arithmetic number, because the mean of its divisors is an integer number (5182974).

Almost surely, 2^42231530 is an apocalyptic number.

42231530 is a deficient number, since it is larger than the sum of its proper divisors (40696054).

42231530 is a wasteful number, since it uses less digits than its factorization.

42231530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 383941.

The product of its (nonzero) digits is 720, while the sum is 20.

The square root of 42231530 is about 6498.5790754595. The cubic root of 42231530 is about 348.2402280613.

Adding to 42231530 its reverse (3513224), we get a palindrome (45744754).

The spelling of 42231530 in words is "forty-two million, two hundred thirty-one thousand, five hundred thirty".