1242692918 has 16 divisors (see below), whose sum is σ = 1874592720. Its totient is φ = 617836416.

The previous prime is 1242692909. The next prime is 1242692933. The reversal of 1242692918 is 8192962421.

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, 473546 + ... + 476162.

It is an arithmetic number, because the mean of its divisors is an integer number (117162045).

Almost surely, 2^1242692918 is an apocalyptic number.

1242692918 is a deficient number, since it is larger than the sum of its proper divisors (631899802).

1242692918 is a wasteful number, since it uses less digits than its factorization.

1242692918 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3871.

The product of its digits is 124416, while the sum is 44.

The square root of 1242692918 is about 35251.8498521709. The cubic root of 1242692918 is about 1075.1142241706.

The spelling of 1242692918 in words is "one billion, two hundred forty-two million, six hundred ninety-two thousand, nine hundred eighteen".