1242376156 has 24 divisors (see below), whose sum is σ = 2485528416. Its totient is φ = 532280640.

The previous prime is 1242376129. The next prime is 1242376169. The reversal of 1242376156 is 6516732421.

It is a congruent number.

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, 136170 + ... + 145006.

It is an arithmetic number, because the mean of its divisors is an integer number (103563684).

Almost surely, 2^1242376156 is an apocalyptic number.

It is an amenable number.

1242376156 is an abundant number, since it is smaller than the sum of its proper divisors (1243152260).

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

1242376156 is a wasteful number, since it uses less digits than its factorization.

1242376156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13869 (or 13867 counting only the distinct ones).

The product of its digits is 60480, while the sum is 37.

The square root of 1242376156 is about 35247.3567235899. The cubic root of 1242376156 is about 1075.0228676585.

The spelling of 1242376156 in words is "one billion, two hundred forty-two million, three hundred seventy-six thousand, one hundred fifty-six".