42506412 has 24 divisors (see below), whose sum is σ = 106811376. Its totient is φ = 13078848.

The previous prime is 42506411. The next prime is 42506413. The reversal of 42506412 is 21460524.

It is an interprime number because it is at equal distance from previous prime (42506411) and next prime (42506413).

It is a super-2 number, since 2×42506412² = 3613590122227488, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (42506411) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 136083 + ... + 136394.

It is an arithmetic number, because the mean of its divisors is an integer number (4450474).

Almost surely, 2^42506412 is an apocalyptic number.

It is an amenable number.

42506412 is an abundant number, since it is smaller than the sum of its proper divisors (64304964).

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

42506412 is a wasteful number, since it uses less digits than its factorization.

42506412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 272497 (or 272495 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 24.

The square root of 42506412 is about 6519.6941646062. The cubic root of 42506412 is about 348.9941515647.

Adding to 42506412 its reverse (21460524), we get a palindrome (63966936).

The spelling of 42506412 in words is "forty-two million, five hundred six thousand, four hundred twelve".