123031140554420 has 192 divisors, whose sum is σ = 300518172057600. Its totient is φ = 41439317990400.

The previous prime is 123031140554419. The next prime is 123031140554453. The reversal of 123031140554420 is 24455041130321.

It is a super-2 number, since 2×123031140554420² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 8284359995 + ... + 8284374845.

It is an arithmetic number, because the mean of its divisors is an integer number (1565198812800).

Almost surely, 2^{123031140554420} is an apocalyptic number.

123031140554420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 123031140554420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (150259086028800).

123031140554420 is an abundant number, since it is smaller than the sum of its proper divisors (177487031503180).

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

123031140554420 is a wasteful number, since it uses less digits than its factorization.

123031140554420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19198 (or 19196 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 35.

Adding to 123031140554420 its reverse (24455041130321), we get a palindrome (147486181684741).

The spelling of 123031140554420 in words is "one hundred twenty-three trillion, thirty-one billion, one hundred forty million, five hundred fifty-four thousand, four hundred twenty".