1242353918 has 16 divisors (see below), whose sum is σ = 2007625200. Its totient is φ = 573181056.

The previous prime is 1242353887. The next prime is 1242353929. The reversal of 1242353918 is 8193532421.

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, 78758 + ... + 93206.

It is an arithmetic number, because the mean of its divisors is an integer number (125476575).

Almost surely, 2^1242353918 is an apocalyptic number.

1242353918 is a deficient number, since it is larger than the sum of its proper divisors (765271282).

1242353918 is a wasteful number, since it uses less digits than its factorization.

1242353918 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17771.

The product of its digits is 51840, while the sum is 38.

The square root of 1242353918 is about 35247.0412658992. The cubic root of 1242353918 is about 1075.0164534709.

The spelling of 1242353918 in words is "one billion, two hundred forty-two million, three hundred fifty-three thousand, nine hundred eighteen".