123442124535130 has 16 divisors (see below), whose sum is σ = 229857749134920. Its totient is φ = 47674199820352.

The previous prime is 123442124535109. The next prime is 123442124535227. The reversal of 123442124535130 is 31535421244321.

It can be written as a sum of positive squares in 4 ways, for example, as 107110722023761 + 16331402511369 = 10349431^2 + 4041213^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 212831248909 + ... + 212831249488.

Almost surely, 2^{123442124535130} is an apocalyptic number.

123442124535130 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

123442124535130 is a deficient number, since it is larger than the sum of its proper divisors (106415624599790).

123442124535130 is a wasteful number, since it uses less digits than its factorization.

123442124535130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 425662498433.

The product of its (nonzero) digits is 345600, while the sum is 40.

Adding to 123442124535130 its reverse (31535421244321), we get a palindrome (154977545779451).

The spelling of 123442124535130 in words is "one hundred twenty-three trillion, four hundred forty-two billion, one hundred twenty-four million, five hundred thirty-five thousand, one hundred thirty".