42939580 has 12 divisors (see below), whose sum is σ = 90173160. Its totient is φ = 17175824.

The previous prime is 42939577. The next prime is 42939583. The reversal of 42939580 is 8593924.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (42939577) and next prime (42939583).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42939583) 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, 1073470 + ... + 1073509.

It is an arithmetic number, because the mean of its divisors is an integer number (7514430).

Almost surely, 2^42939580 is an apocalyptic number.

It is an amenable number.

42939580 is an abundant number, since it is smaller than the sum of its proper divisors (47233580).

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

42939580 is a wasteful number, since it uses less digits than its factorization.

42939580 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2146988 (or 2146986 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 40.

The square root of 42939580 is about 6552.8299230180. The cubic root of 42939580 is about 350.1756397355.

The spelling of 42939580 in words is "forty-two million, nine hundred thirty-nine thousand, five hundred eighty".