126920638 has 8 divisors (see below), whose sum is σ = 205025688. Its totient is φ = 58578744.

The previous prime is 126920611. The next prime is 126920659. The reversal of 126920638 is 836029621.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×126920638² = 32217696700654088, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 126920597 and 126920606.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2440756 + ... + 2440807.

It is an arithmetic number, because the mean of its divisors is an integer number (25628211).

Almost surely, 2^126920638 is an apocalyptic number.

126920638 is a deficient number, since it is larger than the sum of its proper divisors (78105050).

126920638 is a wasteful number, since it uses less digits than its factorization.

126920638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4881578.

The product of its (nonzero) digits is 31104, while the sum is 37.

The square root of 126920638 is about 11265.9059999629. The cubic root of 126920638 is about 502.5478455800.

The spelling of 126920638 in words is "one hundred twenty-six million, nine hundred twenty thousand, six hundred thirty-eight".