12401542040 has 64 divisors (see below), whose sum is σ = 29295648000. Its totient is φ = 4715770752.

The previous prime is 12401542019. The next prime is 12401542099. The reversal of 12401542040 is 4024510421.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a junction number, because it is equal to n+sod(n) for n = 12401541997 and 12401542015.

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, 108611 + ... + 191309.

It is an arithmetic number, because the mean of its divisors is an integer number (457744500).

Almost surely, 2^12401542040 is an apocalyptic number.

12401542040 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 12401542040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14647824000).

12401542040 is an abundant number, since it is smaller than the sum of its proper divisors (16894105960).

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

12401542040 is a wasteful number, since it uses less digits than its factorization.

12401542040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82896 (or 82892 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 23.

The spelling of 12401542040 in words is "twelve billion, four hundred one million, five hundred forty-two thousand, forty".