12402434140 has 48 divisors (see below), whose sum is σ = 26144836704. Its totient is φ = 4942022400.

The previous prime is 12402434087. The next prime is 12402434171. The reversal of 12402434140 is 4143420421.

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, 10025602 + ... + 10026838.

It is an arithmetic number, because the mean of its divisors is an integer number (544684098).

Almost surely, 2^12402434140 is an apocalyptic number.

12402434140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12402434140 is an abundant number, since it is smaller than the sum of its proper divisors (13742402564).

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

12402434140 is a wasteful number, since it uses less digits than its factorization.

12402434140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2758 (or 2756 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 25.

Adding to 12402434140 its reverse (4143420421), we get a palindrome (16545854561).

The spelling of 12402434140 in words is "twelve billion, four hundred two million, four hundred thirty-four thousand, one hundred forty".