42913872 has 30 divisors (see below), whose sum is σ = 120099642. Its totient is φ = 14304576.

The previous prime is 42913841. The next prime is 42913873. The reversal of 42913872 is 27831924.

It can be written as a sum of positive squares in only one way, i.e., 40908816 + 2005056 = 6396^2 + 1416^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42913873) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 148863 + ... + 149150.

Almost surely, 2^42913872 is an apocalyptic number.

It is an amenable number.

42913872 is an abundant number, since it is smaller than the sum of its proper divisors (77185770).

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

42913872 is a wasteful number, since it uses less digits than its factorization.

42913872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 298027 (or 298018 counting only the distinct ones).

The product of its digits is 24192, while the sum is 36.

The square root of 42913872 is about 6550.8680340853. The cubic root of 42913872 is about 350.1057421995.

The spelling of 42913872 in words is "forty-two million, nine hundred thirteen thousand, eight hundred seventy-two".