125706978 has 40 divisors (see below), whose sum is σ = 282339948. Its totient is φ = 41803776.

The previous prime is 125706961. The next prime is 125706989. The reversal of 125706978 is 879607521.

125706978 is a `hidden beast` number, since 1 + 2 + 570 + 6 + 9 + 78 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 125148969 + 558009 = 11187^2 + 747^2 .

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 108450 + ... + 109602.

Almost surely, 2^125706978 is an apocalyptic number.

125706978 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

125706978 is an abundant number, since it is smaller than the sum of its proper divisors (156632970).

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

125706978 is a wasteful number, since it uses less digits than its factorization.

125706978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1840 (or 1831 counting only the distinct ones).

The product of its (nonzero) digits is 211680, while the sum is 45.

The square root of 125706978 is about 11211.9123257364. The cubic root of 125706978 is about 500.9408657660.

The spelling of 125706978 in words is "one hundred twenty-five million, seven hundred six thousand, nine hundred seventy-eight".