42971980 has 12 divisors (see below), whose sum is σ = 90241200. Its totient is φ = 17188784.

The previous prime is 42971963. The next prime is 42972023. The reversal of 42971980 is 8917924.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1074280 + ... + 1074319.

It is an arithmetic number, because the mean of its divisors is an integer number (7520100).

Almost surely, 2^42971980 is an apocalyptic number.

It is an amenable number.

42971980 is an abundant number, since it is smaller than the sum of its proper divisors (47269220).

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

42971980 is a wasteful number, since it uses less digits than its factorization.

42971980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2148608 (or 2148606 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 40.

The square root of 42971980 is about 6555.3016711666. The cubic root of 42971980 is about 350.2636924388.

The spelling of 42971980 in words is "forty-two million, nine hundred seventy-one thousand, nine hundred eighty".