123014243451540 has 192 divisors, whose sum is σ = 397769560892928. Its totient is φ = 27823067136000.

The previous prime is 123014243451527. The next prime is 123014243451571. The reversal of 123014243451540 is 45154342410321.

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, 249122890 + ... + 249616190.

It is an arithmetic number, because the mean of its divisors is an integer number (2071716462984).

Almost surely, 2^{123014243451540} is an apocalyptic number.

123014243451540 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 123014243451540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (198884780446464).

123014243451540 is an abundant number, since it is smaller than the sum of its proper divisors (274755317441388).

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

123014243451540 is a wasteful number, since it uses less digits than its factorization.

123014243451540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 499538 (or 499536 counting only the distinct ones).

The product of its (nonzero) digits is 230400, while the sum is 39.

Adding to 123014243451540 its reverse (45154342410321), we get a palindrome (168168585861861).

The spelling of 123014243451540 in words is "one hundred twenty-three trillion, fourteen billion, two hundred forty-three million, four hundred fifty-one thousand, five hundred forty".