126057643123 has 4 divisors (see below), whose sum is σ = 126080268048. Its totient is φ = 126035018200.

The previous prime is 126057643087. The next prime is 126057643133. The reversal of 126057643123 is 321346750621.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-126057643123 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (126057643133) 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, 11304103 + ... + 11315248.

It is an arithmetic number, because the mean of its divisors is an integer number (31520067012).

Almost surely, 2^126057643123 is an apocalyptic number.

126057643123 is a deficient number, since it is larger than the sum of its proper divisors (22624925).

126057643123 is an equidigital number, since it uses as much as digits as its factorization.

126057643123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22624924.

The product of its (nonzero) digits is 181440, while the sum is 40.

The spelling of 126057643123 in words is "one hundred twenty-six billion, fifty-seven million, six hundred forty-three thousand, one hundred twenty-three".