126280257 has 8 divisors (see below), whose sum is σ = 168492000. Its totient is φ = 84127680.

The previous prime is 126280247. The next prime is 126280279. The reversal of 126280257 is 752082621.

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

It is not a de Polignac number, because 126280257 - 2⁴ = 126280241 is a prime.

It is not an unprimeable number, because it can be changed into a prime (126280247) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9544 + ... + 18537.

It is an arithmetic number, because the mean of its divisors is an integer number (21061500).

Almost surely, 2^126280257 is an apocalyptic number.

It is an amenable number.

126280257 is a deficient number, since it is larger than the sum of its proper divisors (42211743).

126280257 is a wasteful number, since it uses less digits than its factorization.

126280257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29583.

The product of its (nonzero) digits is 13440, while the sum is 33.

The square root of 126280257 is about 11237.4488652897. The cubic root of 126280257 is about 501.7012145070.

The spelling of 126280257 in words is "one hundred twenty-six million, two hundred eighty thousand, two hundred fifty-seven".