126870642 has 24 divisors (see below), whose sum is σ = 278654844. Its totient is φ = 41710464.

The previous prime is 126870617. The next prime is 126870647. The reversal of 126870642 is 246078621.

126870642 is a `hidden beast` number, since 1 + 2 + 6 + 8 + 7 + 0 + 642 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 117744201 + 9126441 = 10851^2 + 3021^2 .

It is a junction number, because it is equal to n+sod(n) for n = 126870597 and 126870606.

It is not an unprimeable number, because it can be changed into a prime (126870647) 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, 46963 + ... + 49590.

Almost surely, 2^126870642 is an apocalyptic number.

126870642 is an abundant number, since it is smaller than the sum of its proper divisors (151784202).

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

126870642 is a wasteful number, since it uses less digits than its factorization.

126870642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96634 (or 96631 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 36.

The square root of 126870642 is about 11263.6868741989. The cubic root of 126870642 is about 502.4818497937.

The spelling of 126870642 in words is "one hundred twenty-six million, eight hundred seventy thousand, six hundred forty-two".