42023812 has 12 divisors (see below), whose sum is σ = 74788560. Its totient is φ = 20655656.

The previous prime is 42023809. The next prime is 42023819. The reversal of 42023812 is 21832024.

It is a super-2 number, since 2×42023812² = 3532001550022688, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (42023819) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 88798 + ... + 89269.

It is an arithmetic number, because the mean of its divisors is an integer number (6232380).

Almost surely, 2^42023812 is an apocalyptic number.

It is an amenable number.

42023812 is a deficient number, since it is larger than the sum of its proper divisors (32764748).

42023812 is a wasteful number, since it uses less digits than its factorization.

42023812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 178130 (or 178128 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 22.

The square root of 42023812 is about 6482.5775737742. The cubic root of 42023812 is about 347.6683434640.

Adding to 42023812 its reverse (21832024), we get a palindrome (63855836).

The spelling of 42023812 in words is "forty-two million, twenty-three thousand, eight hundred twelve".