126713638 has 16 divisors (see below), whose sum is σ = 191580480. Its totient is φ = 62856000.

The previous prime is 126713627. The next prime is 126713659. The reversal of 126713638 is 836317621.

It is a junction number, because it is equal to n+sod(n) for n = 126713597 and 126713606.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 210538 + ... + 211138.

It is an arithmetic number, because the mean of its divisors is an integer number (11973780).

Almost surely, 2^126713638 is an apocalyptic number.

126713638 is a deficient number, since it is larger than the sum of its proper divisors (64866842).

126713638 is a wasteful number, since it uses less digits than its factorization.

126713638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1263.

The product of its digits is 36288, while the sum is 37.

The square root of 126713638 is about 11256.7152402466. The cubic root of 126713638 is about 502.2744883831.

The spelling of 126713638 in words is "one hundred twenty-six million, seven hundred thirteen thousand, six hundred thirty-eight".