1253442668 has 12 divisors (see below), whose sum is σ = 2198890680. Its totient is φ = 625188192.

The previous prime is 1253442643. The next prime is 1253442679. The reversal of 1253442668 is 8662443521.

It is a super-2 number, since 2×1253442668² = 3142237043925916448, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 381446 + ... + 384717.

It is an arithmetic number, because the mean of its divisors is an integer number (183240890).

Almost surely, 2^1253442668 is an apocalyptic number.

It is an amenable number.

1253442668 is a deficient number, since it is larger than the sum of its proper divisors (945448012).

1253442668 is a wasteful number, since it uses less digits than its factorization.

1253442668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 766576 (or 766574 counting only the distinct ones).

The product of its digits is 276480, while the sum is 41.

The square root of 1253442668 is about 35403.9922607606. The cubic root of 1253442668 is about 1078.2053722991.

The spelling of 1253442668 in words is "one billion, two hundred fifty-three million, four hundred forty-two thousand, six hundred sixty-eight".