1242557331436 has 24 divisors (see below), whose sum is σ = 2217325297824. Its totient is φ = 609155260800.

The previous prime is 1242557331347. The next prime is 1242557331451. The reversal of 1242557331436 is 6341337552421.

It is a hoax number, since the sum of its digits (46) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14888665 + ... + 14971888.

It is an arithmetic number, because the mean of its divisors is an integer number (92388554076).

Almost surely, 2^{1242557331436} is an apocalyptic number.

It is an amenable number.

1242557331436 is a deficient number, since it is larger than the sum of its proper divisors (974767966388).

1242557331436 is a wasteful number, since it uses less digits than its factorization.

1242557331436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29860761 (or 29860759 counting only the distinct ones).

The product of its digits is 1814400, while the sum is 46.

The spelling of 1242557331436 in words is "one trillion, two hundred forty-two billion, five hundred fifty-seven million, three hundred thirty-one thousand, four hundred thirty-six".