126456876257 has 4 divisors (see below), whose sum is σ = 126460444080. Its totient is φ = 126453308436.

The previous prime is 126456876223. The next prime is 126456876269. The reversal of 126456876257 is 752678654621.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 126456876257 - 2²⁴ = 126440099041 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 126456876196 and 126456876205.

It is not an unprimeable number, because it can be changed into a prime (126456872257) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1730207 + ... + 1801812.

It is an arithmetic number, because the mean of its divisors is an integer number (31615111020).

Almost surely, 2^126456876257 is an apocalyptic number.

It is an amenable number.

126456876257 is a deficient number, since it is larger than the sum of its proper divisors (3567823).

126456876257 is an equidigital number, since it uses as much as digits as its factorization.

126456876257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3567822.

The product of its digits is 33868800, while the sum is 59.

The spelling of 126456876257 in words is "one hundred twenty-six billion, four hundred fifty-six million, eight hundred seventy-six thousand, two hundred fifty-seven".