126661156 has 6 divisors (see below), whose sum is σ = 221657030. Its totient is φ = 63330576.

The previous prime is 126661153. The next prime is 126661181. The reversal of 126661156 is 651166621.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 123654400 + 3006756 = 11120^2 + 1734^2 .

It is not an unprimeable number, because it can be changed into a prime (126661153) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15832641 + ... + 15832648.

Almost surely, 2^126661156 is an apocalyptic number.

It is an amenable number.

126661156 is a deficient number, since it is larger than the sum of its proper divisors (94995874).

126661156 is a wasteful number, since it uses less digits than its factorization.

126661156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31665293 (or 31665291 counting only the distinct ones).

The product of its digits is 12960, while the sum is 34.

The square root of 126661156 is about 11254.3838569688. The cubic root of 126661156 is about 502.2051351278.

The spelling of 126661156 in words is "one hundred twenty-six million, six hundred sixty-one thousand, one hundred fifty-six".