123421438212444 has 144 divisors (see below), whose sum is σ = 351909239834880. Its totient is φ = 36240574210560.

The previous prime is 123421438212439. The next prime is 123421438212473. The reversal of 123421438212444 is 444212834124321.

123421438212444 is a `hidden beast` number, since 1 + 2 + 3 + 4 + 21 + 4 + 382 + 1 + 244 + 4 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 123421438212444.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 62975592 + ... + 64905839.

It is an arithmetic number, because the mean of its divisors is an integer number (2443814165520).

Almost surely, 2^{123421438212444} is an apocalyptic number.

It is an amenable number.

123421438212444 is an abundant number, since it is smaller than the sum of its proper divisors (228487801622436).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

123421438212444 is a wasteful number, since it uses less digits than its factorization.

123421438212444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 127881560 (or 127881555 counting only the distinct ones).

The product of its digits is 1179648, while the sum is 45.

The spelling of 123421438212444 in words is "one hundred twenty-three trillion, four hundred twenty-one billion, four hundred thirty-eight million, two hundred twelve thousand, four hundred forty-four".