1240812870 has 32 divisors (see below), whose sum is σ = 3248674560. Its totient is φ = 300803040.

The previous prime is 1240812869. The next prime is 1240812883. The reversal of 1240812870 is 782180421.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1879690 + ... + 1880349.

It is an arithmetic number, because the mean of its divisors is an integer number (101521080).

Almost surely, 2^1240812870 is an apocalyptic number.

1240812870 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1240812870 is an abundant number, since it is smaller than the sum of its proper divisors (2007861690).

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

1240812870 is a wasteful number, since it uses less digits than its factorization.

1240812870 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3760060.

The product of its (nonzero) digits is 7168, while the sum is 33.

The square root of 1240812870 is about 35225.1738107848. The cubic root of 1240812870 is about 1074.5717768001.

The spelling of 1240812870 in words is "one billion, two hundred forty million, eight hundred twelve thousand, eight hundred seventy".