126639874 has 16 divisors (see below), whose sum is σ = 191750328. Its totient is φ = 62726272.

The previous prime is 126639869. The next prime is 126639893. The reversal of 126639874 is 478936621.

It can be written as a sum of positive squares in 4 ways, for example, as 125552025 + 1087849 = 11205^2 + 1043^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 114894 + ... + 115990.

Almost surely, 2^126639874 is an apocalyptic number.

126639874 is a deficient number, since it is larger than the sum of its proper divisors (65110454).

126639874 is a wasteful number, since it uses less digits than its factorization.

126639874 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1589.

The product of its digits is 435456, while the sum is 46.

The square root of 126639874 is about 11253.4383190205. The cubic root of 126639874 is about 502.1770061979.

It can be divided in two parts, 126 and 639874, that added together give a square (640000 = 800²).

The spelling of 126639874 in words is "one hundred twenty-six million, six hundred thirty-nine thousand, eight hundred seventy-four".