42811970 has 24 divisors (see below), whose sum is σ = 80567676. Its totient is φ = 16378208.

The previous prime is 42811943. The next prime is 42811999. The reversal of 42811970 is 7911824.

It can be written as a sum of positive squares in 2 ways, for example, as 42367081 + 444889 = 6509^2 + 667^2 .

It is a hoax number, since the sum of its digits (32) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1244 + ... + 9336.

Almost surely, 2^42811970 is an apocalyptic number.

42811970 is a deficient number, since it is larger than the sum of its proper divisors (37755706).

42811970 is a wasteful number, since it uses less digits than its factorization.

42811970 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8146 (or 8123 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 32.

The square root of 42811970 is about 6543.0856635077. The cubic root of 42811970 is about 349.8284056822.

The spelling of 42811970 in words is "forty-two million, eight hundred eleven thousand, nine hundred seventy".