1125952139 has 4 divisors (see below), whose sum is σ = 1212563856. Its totient is φ = 1039340424.

The previous prime is 1125952133. The next prime is 1125952159. The reversal of 1125952139 is 9312595211.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1125952139 - 2⁴ = 1125952123 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1125952133) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 43305839 + ... + 43305864.

It is an arithmetic number, because the mean of its divisors is an integer number (303140964).

Almost surely, 2^1125952139 is an apocalyptic number.

1125952139 is a deficient number, since it is larger than the sum of its proper divisors (86611717).

1125952139 is an equidigital number, since it uses as much as digits as its factorization.

1125952139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86611716.

The product of its digits is 24300, while the sum is 38.

The square root of 1125952139 is about 33555.2103107699. The cubic root of 1125952139 is about 1040.3352404824.

The spelling of 1125952139 in words is "one billion, one hundred twenty-five million, nine hundred fifty-two thousand, one hundred thirty-nine".