134256120562123 has 4 divisors (see below), whose sum is σ = 153435566356720. Its totient is φ = 115076674767528.

The previous prime is 134256120562093. The next prime is 134256120562153. The reversal of 134256120562123 is 321265021652431.

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

It is an interprime number because it is at equal distance from previous prime (134256120562093) and next prime (134256120562153).

It is a cyclic number.

It is not a de Polignac number, because 134256120562123 - 2²¹ = 134256118464971 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 134256120562123.

It is not an unprimeable number, because it can be changed into a prime (134256120562153) 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, 9589722897288 + ... + 9589722897301.

It is an arithmetic number, because the mean of its divisors is an integer number (38358891589180).

Almost surely, 2^{134256120562123} is an apocalyptic number.

134256120562123 is a deficient number, since it is larger than the sum of its proper divisors (19179445794597).

134256120562123 is an equidigital number, since it uses as much as digits as its factorization.

134256120562123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19179445794596.

The product of its (nonzero) digits is 518400, while the sum is 43.

The spelling of 134256120562123 in words is "one hundred thirty-four trillion, two hundred fifty-six billion, one hundred twenty million, five hundred sixty-two thousand, one hundred twenty-three".