1242436456 has 32 divisors (see below), whose sum is σ = 2360292480. Its totient is φ = 613080000.

The previous prime is 1242436411. The next prime is 1242436477. The reversal of 1242436456 is 6546342421.

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, 186381 + ... + 192931.

It is an arithmetic number, because the mean of its divisors is an integer number (73759140).

Almost surely, 2^1242436456 is an apocalyptic number.

It is an amenable number.

1242436456 is a deficient number, since it is larger than the sum of its proper divisors (1117856024).

1242436456 is a wasteful number, since it uses less digits than its factorization.

1242436456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6865 (or 6861 counting only the distinct ones).

The product of its digits is 138240, while the sum is 37.

The square root of 1242436456 is about 35248.2120965021. The cubic root of 1242436456 is about 1075.0402598227.

Adding to 1242436456 its reverse (6546342421), we get a palindrome (7788778877).

The spelling of 1242436456 in words is "one billion, two hundred forty-two million, four hundred thirty-six thousand, four hundred fifty-six".