1242322642 has 32 divisors (see below), whose sum is σ = 2066300928. Its totient is φ = 555450000.

The previous prime is 1242322639. The next prime is 1242322661. The reversal of 1242322642 is 2462232421.

It is a self number, because there is not a number n which added to its sum of digits gives 1242322642.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 1078767 + ... + 1079917.

It is an arithmetic number, because the mean of its divisors is an integer number (64571904).

Almost surely, 2^1242322642 is an apocalyptic number.

1242322642 is a deficient number, since it is larger than the sum of its proper divisors (823978286).

1242322642 is a wasteful number, since it uses less digits than its factorization.

1242322642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1926.

The product of its digits is 9216, while the sum is 28.

The square root of 1242322642 is about 35246.5975946615. The cubic root of 1242322642 is about 1075.0074322904.

The spelling of 1242322642 in words is "one billion, two hundred forty-two million, three hundred twenty-two thousand, six hundred forty-two".