1242631724 has 18 divisors (see below), whose sum is σ = 2183746572. Its totient is φ = 618715000.

The previous prime is 1242631723. The next prime is 1242631727. The reversal of 1242631724 is 4271362421.

It is not an unprimeable number, because it can be changed into a prime (1242631723) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 249539 + ... + 254469.

It is an arithmetic number, because the mean of its divisors is an integer number (121319254).

Almost surely, 2^1242631724 is an apocalyptic number.

It is an amenable number.

1242631724 is a deficient number, since it is larger than the sum of its proper divisors (941114848).

1242631724 is an equidigital number, since it uses as much as digits as its factorization.

1242631724 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5437 (or 5184 counting only the distinct ones).

The product of its digits is 16128, while the sum is 32.

The square root of 1242631724 is about 35250.9818870340. The cubic root of 1242631724 is about 1075.0965765767.

The spelling of 1242631724 in words is "one billion, two hundred forty-two million, six hundred thirty-one thousand, seven hundred twenty-four".