42289012 has 6 divisors (see below), whose sum is σ = 74005778. Its totient is φ = 21144504.

The previous prime is 42288997. The next prime is 42289033. The reversal of 42289012 is 21098224.

It can be written as a sum of positive squares in only one way, i.e., 41525136 + 763876 = 6444^2 + 874^2 .

It is a super-2 number, since 2×42289012² = 3576721071872288, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5286123 + ... + 5286130.

Almost surely, 2^42289012 is an apocalyptic number.

It is an amenable number.

42289012 is a deficient number, since it is larger than the sum of its proper divisors (31716766).

42289012 is a wasteful number, since it uses less digits than its factorization.

42289012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10572257 (or 10572255 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 28.

The square root of 42289012 is about 6503.0002306628. Note that the first 3 decimals coincide. The cubic root of 42289012 is about 348.3981548487.

The spelling of 42289012 in words is "forty-two million, two hundred eighty-nine thousand, twelve".