1145642152 has 16 divisors (see below), whose sum is σ = 2168156160. Its totient is φ = 567467184.

The previous prime is 1145642149. The next prime is 1145642153. The reversal of 1145642152 is 2512465411.

It is a happy number.

It is a super-2 number, since 2×1145642152² = 2624991880878382208, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1145642153) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 668328 + ... + 670039.

It is an arithmetic number, because the mean of its divisors is an integer number (135509760).

Almost surely, 2^1145642152 is an apocalyptic number.

It is an amenable number.

1145642152 is a deficient number, since it is larger than the sum of its proper divisors (1022514008).

1145642152 is a wasteful number, since it uses less digits than its factorization.

1145642152 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1338480 (or 1338476 counting only the distinct ones).

The product of its digits is 9600, while the sum is 31.

The square root of 1145642152 is about 33847.3359660698. The cubic root of 1145642152 is about 1046.3644948823.

The spelling of 1145642152 in words is "one billion, one hundred forty-five million, six hundred forty-two thousand, one hundred fifty-two".