123242510121420 has 96 divisors (see below), whose sum is σ = 346677573715200. Its totient is φ = 32712596064000.

The previous prime is 123242510121383. The next prime is 123242510121449. The reversal of 123242510121420 is 24121015242321.

It is a super-2 number, since 2×123242510121420² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 20686419 + ... + 25969461.

It is an arithmetic number, because the mean of its divisors is an integer number (3611224726200).

Almost surely, 2^{123242510121420} is an apocalyptic number.

123242510121420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123242510121420 is an abundant number, since it is smaller than the sum of its proper divisors (223435063593780).

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

123242510121420 is a wasteful number, since it uses less digits than its factorization.

123242510121420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5284855 (or 5284853 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 30.

Adding to 123242510121420 its reverse (24121015242321), we get a palindrome (147363525363741).

The spelling of 123242510121420 in words is "one hundred twenty-three trillion, two hundred forty-two billion, five hundred ten million, one hundred twenty-one thousand, four hundred twenty".