42970940 has 12 divisors (see below), whose sum is σ = 90239016. Its totient is φ = 17188368.

The previous prime is 42970933. The next prime is 42970957. The reversal of 42970940 is 4907924.

It is a self number, because there is not a number n which added to its sum of digits gives 42970940.

It is a congruent number.

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, 1074254 + ... + 1074293.

It is an arithmetic number, because the mean of its divisors is an integer number (7519918).

Almost surely, 2^42970940 is an apocalyptic number.

It is an amenable number.

42970940 is an abundant number, since it is smaller than the sum of its proper divisors (47268076).

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

42970940 is a wasteful number, since it uses less digits than its factorization.

42970940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2148556 (or 2148554 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 35.

The square root of 42970940 is about 6555.2223455807. Note that the first 3 decimals coincide. The cubic root of 42970940 is about 350.2608667434.

The spelling of 42970940 in words is "forty-two million, nine hundred seventy thousand, nine hundred forty".