12342492540 has 72 divisors (see below), whose sum is σ = 42787311840. Its totient is φ = 2821140864.

The previous prime is 12342492529. The next prime is 12342492583. The reversal of 12342492540 is 4529424321.

It is a happy number.

12342492540 is a `hidden beast` number, since 1 + 2 + 3 + 4 + 24 + 92 + 540 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 12342492495 and 12342492504.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4896555 + ... + 4899074.

It is an arithmetic number, because the mean of its divisors is an integer number (594268220).

Almost surely, 2^12342492540 is an apocalyptic number.

12342492540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12342492540 is an abundant number, since it is smaller than the sum of its proper divisors (30444819300).

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

12342492540 is a wasteful number, since it uses less digits than its factorization.

12342492540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9795651 (or 9795646 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 36.

The spelling of 12342492540 in words is "twelve billion, three hundred forty-two million, four hundred ninety-two thousand, five hundred forty".