1242440604 has 36 divisors (see below), whose sum is σ = 3142653696. Its totient is φ = 413877888.

The previous prime is 1242440603. The next prime is 1242440621. The reversal of 1242440604 is 4060442421.

It is a happy number.

1242440604 is a `hidden beast` number, since 12 + 4 + 2 + 4 + 40 + 604 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1242440603) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 49492 + ... + 70244.

It is an arithmetic number, because the mean of its divisors is an integer number (87295936).

Almost surely, 2^1242440604 is an apocalyptic number.

It is an amenable number.

1242440604 is an abundant number, since it is smaller than the sum of its proper divisors (1900213092).

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

1242440604 is a wasteful number, since it uses less digits than its factorization.

1242440604 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22426 (or 22421 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 27.

The square root of 1242440604 is about 35248.2709363169. The cubic root of 1242440604 is about 1075.0414561983.

The spelling of 1242440604 in words is "one billion, two hundred forty-two million, four hundred forty thousand, six hundred four".