123132154420 has 48 divisors (see below), whose sum is σ = 282109298688. Its totient is φ = 44771404160.

The previous prime is 123132154403. The next prime is 123132154447. The reversal of 123132154420 is 24451231321.

It is a super-2 number, since 2×123132154420² (a number of 23 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 15 ways as a sum of consecutive naturals, for example, 3954834 + ... + 3985846.

It is an arithmetic number, because the mean of its divisors is an integer number (5877277056).

Almost surely, 2^123132154420 is an apocalyptic number.

123132154420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123132154420 is an abundant number, since it is smaller than the sum of its proper divisors (158977144268).

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

123132154420 is a wasteful number, since it uses less digits than its factorization.

123132154420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49080 (or 49078 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 28.

Adding to 123132154420 its reverse (24451231321), we get a palindrome (147583385741).

The spelling of 123132154420 in words is "one hundred twenty-three billion, one hundred thirty-two million, one hundred fifty-four thousand, four hundred twenty".