1242257676 has 24 divisors (see below), whose sum is σ = 3162110784. Its totient is φ = 376441680.

The previous prime is 1242257663. The next prime is 1242257693. The reversal of 1242257676 is 6767522421.

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, 4705390 + ... + 4705653.

It is an arithmetic number, because the mean of its divisors is an integer number (131754616).

Almost surely, 2^1242257676 is an apocalyptic number.

It is an amenable number.

1242257676 is an abundant number, since it is smaller than the sum of its proper divisors (1919853108).

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

1242257676 is a wasteful number, since it uses less digits than its factorization.

1242257676 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9411061 (or 9411059 counting only the distinct ones).

The product of its digits is 282240, while the sum is 42.

The square root of 1242257676 is about 35245.6759901126. The cubic root of 1242257676 is about 1074.9886931567.

The spelling of 1242257676 in words is "one billion, two hundred forty-two million, two hundred fifty-seven thousand, six hundred seventy-six".