142446404 has 12 divisors (see below), whose sum is σ = 253985004. Its totient is φ = 69879264.

The previous prime is 142446391. The next prime is 142446427. The reversal of 142446404 is 404644241.

142446404 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 128368900 + 14077504 = 11330^2 + 3752^2 .

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, 335747 + ... + 336170.

It is an arithmetic number, because the mean of its divisors is an integer number (21165417).

Almost surely, 2^142446404 is an apocalyptic number.

It is an amenable number.

142446404 is a deficient number, since it is larger than the sum of its proper divisors (111538600).

142446404 is a wasteful number, since it uses less digits than its factorization.

142446404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 671974 (or 671972 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 29.

The square root of 142446404 is about 11935.0912857841. The cubic root of 142446404 is about 522.2564712980.

The spelling of 142446404 in words is "one hundred forty-two million, four hundred forty-six thousand, four hundred four".