123012242215534 has 24 divisors (see below), whose sum is σ = 215091918642240. Its totient is φ = 52609470703776.

The previous prime is 123012242215517. The next prime is 123012242215573. The reversal of 123012242215534 is 435512242210321.

It is a junction number, because it is equal to n+sod(n) for n = 123012242215493 and 123012242215502.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1310210847 + ... + 1310304730.

It is an arithmetic number, because the mean of its divisors is an integer number (8962163276760).

Almost surely, 2^{123012242215534} is an apocalyptic number.

123012242215534 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

123012242215534 is a deficient number, since it is larger than the sum of its proper divisors (92079676426706).

123012242215534 is a wasteful number, since it uses less digits than its factorization.

123012242215534 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2620516072 (or 2620516065 counting only the distinct ones).

The product of its (nonzero) digits is 115200, while the sum is 37.

Adding to 123012242215534 its reverse (435512242210321), we get a palindrome (558524484425855).

The spelling of 123012242215534 in words is "one hundred twenty-three trillion, twelve billion, two hundred forty-two million, two hundred fifteen thousand, five hundred thirty-four".