1001232139 has 2 divisors, whose sum is σ = 1001232140. Its totient is φ = 1001232138.

The previous prime is 1001232109. The next prime is 1001232143. The reversal of 1001232139 is 9312321001.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1001232139 - 2¹¹ = 1001230091 is a prime.

It is not a weakly prime, because it can be changed into another prime (1001232109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 500616069 + 500616070.

It is an arithmetic number, because the mean of its divisors is an integer number (500616070).

Almost surely, 2^1001232139 is an apocalyptic number.

1001232139 is a deficient number, since it is larger than the sum of its proper divisors (1).

1001232139 is an equidigital number, since it uses as much as digits as its factorization.

1001232139 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 324, while the sum is 22.

The square root of 1001232139 is about 31642.2524324676. The cubic root of 1001232139 is about 1000.4105444302.

The spelling of 1001232139 in words is "one billion, one million, two hundred thirty-two thousand, one hundred thirty-nine".