1145240139 has 16 divisors (see below), whose sum is σ = 1619039232. Its totient is φ = 717591168.

The previous prime is 1145240123. The next prime is 1145240147. The reversal of 1145240139 is 9310425411.

It is not a de Polignac number, because 1145240139 - 2⁴ = 1145240123 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1145240149) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22782 + ... + 53004.

It is an arithmetic number, because the mean of its divisors is an integer number (101189952).

Almost surely, 2^1145240139 is an apocalyptic number.

1145240139 is a deficient number, since it is larger than the sum of its proper divisors (473799093).

1145240139 is a wasteful number, since it uses less digits than its factorization.

1145240139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30986.

The product of its (nonzero) digits is 4320, while the sum is 30.

The square root of 1145240139 is about 33841.3968240083. The cubic root of 1145240139 is about 1046.2420886138.

The spelling of 1145240139 in words is "one billion, one hundred forty-five million, two hundred forty thousand, one hundred thirty-nine".