1201132139 has 8 divisors (see below), whose sum is σ = 1265187840. Its totient is φ = 1137160296.

The previous prime is 1201132129. The next prime is 1201132157. The reversal of 1201132139 is 9312311021.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1201132139 - 2²⁴ = 1184354923 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1201132129) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9602 + ... + 49944.

It is an arithmetic number, because the mean of its divisors is an integer number (158148480).

Almost surely, 2^1201132139 is an apocalyptic number.

1201132139 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

1201132139 is a deficient number, since it is larger than the sum of its proper divisors (64055701).

1201132139 is a wasteful number, since it uses less digits than its factorization.

1201132139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41929.

The product of its (nonzero) digits is 324, while the sum is 23.

The square root of 1201132139 is about 34657.3533178747. The cubic root of 1201132139 is about 1062.9926522550.

The spelling of 1201132139 in words is "one billion, two hundred one million, one hundred thirty-two thousand, one hundred thirty-nine".