42279012 has 36 divisors (see below), whose sum is σ = 109763836. Its totient is φ = 13711680.

The previous prime is 42279011. The next prime is 42279031. The reversal of 42279012 is 21097224.

It can be written as a sum of positive squares in 2 ways, for example, as 34292736 + 7986276 = 5856^2 + 2826^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×42279012² = 3575029711392288, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (42279011) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 14539 + ... + 17202.

Almost surely, 2^42279012 is an apocalyptic number.

It is an amenable number.

42279012 is an abundant number, since it is smaller than the sum of its proper divisors (67484824).

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

42279012 is a wasteful number, since it uses less digits than its factorization.

42279012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31788 (or 31783 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 27.

The square root of 42279012 is about 6502.2313093276. The cubic root of 42279012 is about 348.3706910070.

The spelling of 42279012 in words is "forty-two million, two hundred seventy-nine thousand, twelve".