126704457 has 12 divisors (see below), whose sum is σ = 199655664. Its totient is φ = 76790520.

The previous prime is 126704453. The next prime is 126704489. The reversal of 126704457 is 754407621.

It is not a de Polignac number, because 126704457 - 2² = 126704453 is a prime.

It is not an unprimeable number, because it can be changed into a prime (126704453) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 639823 + ... + 640020.

It is an arithmetic number, because the mean of its divisors is an integer number (16637972).

Almost surely, 2^126704457 is an apocalyptic number.

It is an amenable number.

126704457 is a deficient number, since it is larger than the sum of its proper divisors (72951207).

126704457 is a wasteful number, since it uses less digits than its factorization.

126704457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1279860 (or 1279857 counting only the distinct ones).

The product of its (nonzero) digits is 47040, while the sum is 36.

The square root of 126704457 is about 11256.3074318357. The cubic root of 126704457 is about 502.2623573725.

The spelling of 126704457 in words is "one hundred twenty-six million, seven hundred four thousand, four hundred fifty-seven".