1242912693 has 16 divisors (see below), whose sum is σ = 1811520000. Its totient is φ = 751760880.

The previous prime is 1242912691. The next prime is 1242912743. The reversal of 1242912693 is 3962192421.

It is not a de Polignac number, because 1242912693 - 2¹ = 1242912691 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1242912691) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21273 + ... + 54206.

It is an arithmetic number, because the mean of its divisors is an integer number (113220000).

Almost surely, 2^1242912693 is an apocalyptic number.

It is an amenable number.

1242912693 is a deficient number, since it is larger than the sum of its proper divisors (568607307).

1242912693 is a wasteful number, since it uses less digits than its factorization.

1242912693 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75992.

The product of its digits is 46656, while the sum is 39.

The square root of 1242912693 is about 35254.9669266616. The cubic root of 1242912693 is about 1075.1775997901.

The spelling of 1242912693 in words is "one billion, two hundred forty-two million, nine hundred twelve thousand, six hundred ninety-three".