1242140944 has 40 divisors (see below), whose sum is σ = 2739592512. Its totient is φ = 540059520.

The previous prime is 1242140929. The next prime is 1242140947. The reversal of 1242140944 is 4490412421.

It is a super-2 number, since 2×1242140944² = 3085828249522422272, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1242140947) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 149379 + ... + 157474.

Almost surely, 2^1242140944 is an apocalyptic number.

It is an amenable number.

1242140944 is an abundant number, since it is smaller than the sum of its proper divisors (1497451568).

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

1242140944 is a wasteful number, since it uses less digits than its factorization.

1242140944 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 306895 (or 306889 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 31.

The square root of 1242140944 is about 35244.0199750256. The cubic root of 1242140944 is about 1074.9550207249.

The spelling of 1242140944 in words is "one billion, two hundred forty-two million, one hundred forty thousand, nine hundred forty-four".