1152242140 has 24 divisors (see below), whose sum is σ = 2765381472. Its totient is φ = 395054400.

The previous prime is 1152242111. The next prime is 1152242219. The reversal of 1152242140 is 412422511.

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, 4115011 + ... + 4115290.

It is an arithmetic number, because the mean of its divisors is an integer number (115224228).

Almost surely, 2^1152242140 is an apocalyptic number.

1152242140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1152242140 is an abundant number, since it is smaller than the sum of its proper divisors (1613139332).

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

1152242140 is a wasteful number, since it uses less digits than its factorization.

1152242140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8230317 (or 8230315 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 22.

The square root of 1152242140 is about 33944.6923686163. The cubic root of 1152242140 is about 1048.3700000290.

Adding to 1152242140 its reverse (412422511), we get a palindrome (1564664651).

The spelling of 1152242140 in words is "one billion, one hundred fifty-two million, two hundred forty-two thousand, one hundred forty".