126638426 has 16 divisors (see below), whose sum is σ = 194184000. Its totient is φ = 61921728.

The previous prime is 126638419. The next prime is 126638443. The reversal of 126638426 is 624836621.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 126638426.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20786 + ... + 26178.

It is an arithmetic number, because the mean of its divisors is an integer number (12136500).

Almost surely, 2^126638426 is an apocalyptic number.

126638426 is a deficient number, since it is larger than the sum of its proper divisors (67545574).

126638426 is a wasteful number, since it uses less digits than its factorization.

126638426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5653.

The product of its digits is 82944, while the sum is 38.

The square root of 126638426 is about 11253.3739829440. The cubic root of 126638426 is about 502.1750922270.

The spelling of 126638426 in words is "one hundred twenty-six million, six hundred thirty-eight thousand, four hundred twenty-six".