1242761372 has 12 divisors (see below), whose sum is σ = 2175100200. Its totient is φ = 621304176.

The previous prime is 1242761371. The next prime is 1242761393. The reversal of 1242761372 is 2731672421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1242761371) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33518 + ... + 60074.

It is an arithmetic number, because the mean of its divisors is an integer number (181258350).

Almost surely, 2^1242761372 is an apocalyptic number.

It is an amenable number.

1242761372 is a deficient number, since it is larger than the sum of its proper divisors (932338828).

1242761372 is a wasteful number, since it uses less digits than its factorization.

1242761372 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38260 (or 38258 counting only the distinct ones).

The product of its digits is 28224, while the sum is 35.

The square root of 1242761372 is about 35252.8207665713. The cubic root of 1242761372 is about 1075.1339647723.

The spelling of 1242761372 in words is "one billion, two hundred forty-two million, seven hundred sixty-one thousand, three hundred seventy-two".