12402542520 has 192 divisors, whose sum is σ = 41873176800. Its totient is φ = 3179904000.

The previous prime is 12402542519. The next prime is 12402542531. The reversal of 12402542520 is 2524520421.

12402542520 is a `hidden beast` number, since 1 + 2 + 402 + 5 + 4 + 252 + 0 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2618074 + ... + 2622806.

Almost surely, 2^12402542520 is an apocalyptic number.

12402542520 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 12402542520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20936588400).

12402542520 is an abundant number, since it is smaller than the sum of its proper divisors (29470634280).

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

12402542520 is a wasteful number, since it uses less digits than its factorization.

12402542520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5030 (or 5023 counting only the distinct ones).

The product of its (nonzero) digits is 6400, while the sum is 27.

The spelling of 12402542520 in words is "twelve billion, four hundred two million, five hundred forty-two thousand, five hundred twenty".