1242640604 has 24 divisors (see below), whose sum is σ = 2252396160. Its totient is φ = 599152064.

The previous prime is 1242640591. The next prime is 1242640613. The reversal of 1242640604 is 4060462421.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 93902 + ... + 106314.

It is an arithmetic number, because the mean of its divisors is an integer number (93849840).

Almost surely, 2^1242640604 is an apocalyptic number.

It is an amenable number.

1242640604 is a deficient number, since it is larger than the sum of its proper divisors (1009755556).

1242640604 is a wasteful number, since it uses less digits than its factorization.

1242640604 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13309 (or 13307 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 29.

The square root of 1242640604 is about 35251.1078407474. The cubic root of 1242640604 is about 1075.0991374950.

The spelling of 1242640604 in words is "one billion, two hundred forty-two million, six hundred forty thousand, six hundred four".