1242397616 has 20 divisors (see below), whose sum is σ = 2443075032. Its totient is φ = 611926656.

The previous prime is 1242397591. The next prime is 1242397679. The reversal of 1242397616 is 6167932421.

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, 578405 + ... + 580548.

Almost surely, 2^1242397616 is an apocalyptic number.

1242397616 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1242397616 is a deficient number, since it is larger than the sum of its proper divisors (1200677416).

1242397616 is a wasteful number, since it uses less digits than its factorization.

1242397616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1159028 (or 1159022 counting only the distinct ones).

The product of its digits is 108864, while the sum is 41.

The square root of 1242397616 is about 35247.6611422659. The cubic root of 1242397616 is about 1075.0290573721.

The spelling of 1242397616 in words is "one billion, two hundred forty-two million, three hundred ninety-seven thousand, six hundred sixteen".