130239761 has 4 divisors (see below), whose sum is σ = 130382400. Its totient is φ = 130097124.

The previous prime is 130239757. The next prime is 130239779. The reversal of 130239761 is 167932031.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 167932031 = 2221 ⋅75611.

It is a cyclic number.

It is not a de Polignac number, because 130239761 - 2² = 130239757 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (130239751) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 69941 + ... + 71778.

It is an arithmetic number, because the mean of its divisors is an integer number (32595600).

Almost surely, 2^130239761 is an apocalyptic number.

It is an amenable number.

130239761 is a deficient number, since it is larger than the sum of its proper divisors (142639).

130239761 is an equidigital number, since it uses as much as digits as its factorization.

130239761 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142638.

The product of its (nonzero) digits is 6804, while the sum is 32.

The square root of 130239761 is about 11412.2636229628. The cubic root of 130239761 is about 506.8909415597.

The spelling of 130239761 in words is "one hundred thirty million, two hundred thirty-nine thousand, seven hundred sixty-one".