3126342640 has 20 divisors (see below), whose sum is σ = 7268746824. Its totient is φ = 1250537024.

The previous prime is 3126342613. The next prime is 3126342671. The reversal of 3126342640 is 462436213.

3126342640 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (20).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19539562 + ... + 19539721.

Almost surely, 2^3126342640 is an apocalyptic number.

It is an amenable number.

3126342640 is an abundant number, since it is smaller than the sum of its proper divisors (4142404184).

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

3126342640 is a wasteful number, since it uses less digits than its factorization.

3126342640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39079296 (or 39079290 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 31.

The square root of 3126342640 is about 55913.7070851146. The cubic root of 3126342640 is about 1462.2182206298.

Adding to 3126342640 its reverse (462436213), we get a palindrome (3588778853).

The spelling of 3126342640 in words is "three billion, one hundred twenty-six million, three hundred forty-two thousand, six hundred forty".