1242293860 has 24 divisors (see below), whose sum is σ = 2609502840. Its totient is φ = 496786944.

The previous prime is 1242293849. The next prime is 1242293903. The reversal of 1242293860 is 683922421.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 173396224 + 1068897636 = 13168^2 + 32694^2 .

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, 115596 + ... + 125884.

It is an arithmetic number, because the mean of its divisors is an integer number (108729285).

Almost surely, 2^1242293860 is an apocalyptic number.

1242293860 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1242293860 is an abundant number, since it is smaller than the sum of its proper divisors (1367208980).

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

1242293860 is a wasteful number, since it uses less digits than its factorization.

1242293860 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16335 (or 16333 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 37.

The square root of 1242293860 is about 35246.1892975680. The cubic root of 1242293860 is about 1074.9991303400. Note that the first 3 decimals are identical.

The spelling of 1242293860 in words is "one billion, two hundred forty-two million, two hundred ninety-three thousand, eight hundred sixty".