42974216 has 8 divisors (see below), whose sum is σ = 80576670. Its totient is φ = 21487104.

The previous prime is 42974209. The next prime is 42974233. The reversal of 42974216 is 61247924.

It can be written as a sum of positive squares in only one way, i.e., 23136100 + 19838116 = 4810^2 + 4454^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2685881 + ... + 2685896.

Almost surely, 2^42974216 is an apocalyptic number.

It is an amenable number.

42974216 is a deficient number, since it is larger than the sum of its proper divisors (37602454).

42974216 is a wasteful number, since it uses less digits than its factorization.

42974216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5371783 (or 5371779 counting only the distinct ones).

The product of its digits is 24192, while the sum is 35.

The square root of 42974216 is about 6555.4722179260. The cubic root of 42974216 is about 350.2697675296.

The spelling of 42974216 in words is "forty-two million, nine hundred seventy-four thousand, two hundred sixteen".