126456634 has 4 divisors (see below), whose sum is σ = 189684954. Its totient is φ = 63228316.

The previous prime is 126456623. The next prime is 126456641. The reversal of 126456634 is 436654621.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 436654621 = 13 ⋅33588817.

It can be written as a sum of positive squares in only one way, i.e., 67980025 + 58476609 = 8245^2 + 7647^2 .

It is a junction number, because it is equal to n+sod(n) for n = 126456593 and 126456602.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31614157 + ... + 31614160.

Almost surely, 2^126456634 is an apocalyptic number.

126456634 is a deficient number, since it is larger than the sum of its proper divisors (63228320).

126456634 is an equidigital number, since it uses as much as digits as its factorization.

126456634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63228319.

The product of its digits is 103680, while the sum is 37.

The square root of 126456634 is about 11245.2938600999. The cubic root of 126456634 is about 501.9346830146.

The spelling of 126456634 in words is "one hundred twenty-six million, four hundred fifty-six thousand, six hundred thirty-four".