42613506 has 32 divisors (see below), whose sum is σ = 101982720. Its totient is φ = 13111632.

The previous prime is 42613489. The next prime is 42613507. The reversal of 42613506 is 60531624.

42613506 is a `hidden beast` number, since 42 + 613 + 5 + 0 + 6 = 666.

It is a super-2 number, since 2×42613506² = 3631821787224072, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a self number, because there is not a number n which added to its sum of digits gives 42613506.

It is not an unprimeable number, because it can be changed into a prime (42613507) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29650 + ... + 31053.

It is an arithmetic number, because the mean of its divisors is an integer number (3186960).

Almost surely, 2^42613506 is an apocalyptic number.

42613506 is an abundant number, since it is smaller than the sum of its proper divisors (59369214).

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

42613506 is a wasteful number, since it uses less digits than its factorization.

42613506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60727 (or 60721 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 27.

The square root of 42613506 is about 6527.9021132367. The cubic root of 42613506 is about 349.2870002050.

The spelling of 42613506 in words is "forty-two million, six hundred thirteen thousand, five hundred six".