126631089 has 12 divisors (see below), whose sum is σ = 196981876. Its totient is φ = 77926752.

The previous prime is 126631033. The next prime is 126631091. The reversal of 126631089 is 980136621.

126631089 is a `hidden beast` number, since 1 + 266 + 310 + 89 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 26471025 + 100160064 = 5145^2 + 10008^2 .

It is not a de Polignac number, because 126631089 - 2⁷ = 126630961 is a prime.

It is not an unprimeable number, because it can be changed into a prime (126631189) 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, 541042 + ... + 541275.

Almost surely, 2^126631089 is an apocalyptic number.

It is an amenable number.

126631089 is a deficient number, since it is larger than the sum of its proper divisors (70350787).

126631089 is a wasteful number, since it uses less digits than its factorization.

126631089 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1082336 (or 1082333 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 36.

The square root of 126631089 is about 11253.0479871011. The cubic root of 126631089 is about 502.1653939337.

The spelling of 126631089 in words is "one hundred twenty-six million, six hundred thirty-one thousand, eighty-nine".