123243513545126 has 8 divisors (see below), whose sum is σ = 199085675726784. Its totient is φ = 56881621636200.

The previous prime is 123243513545107. The next prime is 123243513545143. The reversal of 123243513545126 is 621545315342321.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2370067568150 + ... + 2370067568201.

It is an arithmetic number, because the mean of its divisors is an integer number (24885709465848).

Almost surely, 2^{123243513545126} is an apocalyptic number.

123243513545126 is a deficient number, since it is larger than the sum of its proper divisors (75842162181658).

123243513545126 is a wasteful number, since it uses less digits than its factorization.

123243513545126 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4740135136366.

The product of its digits is 2592000, while the sum is 47.

Adding to 123243513545126 its reverse (621545315342321), we get a palindrome (744788828887447).

The spelling of 123243513545126 in words is "one hundred twenty-three trillion, two hundred forty-three billion, five hundred thirteen million, five hundred forty-five thousand, one hundred twenty-six".