1242696664 has 16 divisors (see below), whose sum is σ = 2541879720. Its totient is φ = 564862080.

The previous prime is 1242696641. The next prime is 1242696709. The reversal of 1242696664 is 4666962421.

It is a congruent number.

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, 7060689 + ... + 7060864.

Almost surely, 2^1242696664 is an apocalyptic number.

It is an amenable number.

1242696664 is an abundant number, since it is smaller than the sum of its proper divisors (1299183056).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1242696664 is a wasteful number, since it uses less digits than its factorization.

1242696664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14121570 (or 14121566 counting only the distinct ones).

The product of its digits is 746496, while the sum is 46.

The square root of 1242696664 is about 35251.9029840943. The cubic root of 1242696664 is about 1075.1153044519.

The spelling of 1242696664 in words is "one billion, two hundred forty-two million, six hundred ninety-six thousand, six hundred sixty-four".