123203012155454 has 48 divisors (see below), whose sum is σ = 235228539805056. Its totient is φ = 47856154777200.

The previous prime is 123203012155417. The next prime is 123203012155481. The reversal of 123203012155454 is 454551210302321.

It is a super-2 number, since 2×123203012155454² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 172284434 + ... + 172998069.

It is an arithmetic number, because the mean of its divisors is an integer number (4900594579272).

Almost surely, 2^{123203012155454} is an apocalyptic number.

123203012155454 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

123203012155454 is a deficient number, since it is larger than the sum of its proper divisors (112025527649602).

123203012155454 is a wasteful number, since it uses less digits than its factorization.

123203012155454 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 345282861 (or 345282854 counting only the distinct ones).

The product of its (nonzero) digits is 144000, while the sum is 38.

Adding to 123203012155454 its reverse (454551210302321), we get a palindrome (577754222457775).

The spelling of 123203012155454 in words is "one hundred twenty-three trillion, two hundred three billion, twelve million, one hundred fifty-five thousand, four hundred fifty-four".