123420422534 has 8 divisors (see below), whose sum is σ = 185299397928. Its totient is φ = 61653956560.

The previous prime is 123420422519. The next prime is 123420422557. The reversal of 123420422534 is 435224024321.

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

It is a self number, because there is not a number n which added to its sum of digits gives 123420422534.

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 3 ways as a sum of consecutive naturals, for example, 28124612 + ... + 28128999.

It is an arithmetic number, because the mean of its divisors is an integer number (23162424741).

Almost surely, 2^123420422534 is an apocalyptic number.

123420422534 is a deficient number, since it is larger than the sum of its proper divisors (61878975394).

123420422534 is a wasteful number, since it uses less digits than its factorization.

123420422534 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56254710.

The product of its (nonzero) digits is 46080, while the sum is 32.

Adding to 123420422534 its reverse (435224024321), we get a palindrome (558644446855).

The spelling of 123420422534 in words is "one hundred twenty-three billion, four hundred twenty million, four hundred twenty-two thousand, five hundred thirty-four".