130072541 has 4 divisors (see below), whose sum is σ = 133245084. Its totient is φ = 126900000.

The previous prime is 130072531. The next prime is 130072561. The reversal of 130072541 is 145270031.

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

It can be written as a sum of positive squares in 2 ways, for example, as 64866916 + 65205625 = 8054^2 + 8075^2 .

It is a cyclic number.

It is not a de Polignac number, because 130072541 - 2²² = 125878237 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (130072531) 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, 1586210 + ... + 1586291.

It is an arithmetic number, because the mean of its divisors is an integer number (33311271).

Almost surely, 2^130072541 is an apocalyptic number.

It is an amenable number.

130072541 is a deficient number, since it is larger than the sum of its proper divisors (3172543).

130072541 is an equidigital number, since it uses as much as digits as its factorization.

130072541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3172542.

The product of its (nonzero) digits is 840, while the sum is 23.

The square root of 130072541 is about 11404.9349406299. The cubic root of 130072541 is about 506.6739095129.

The spelling of 130072541 in words is "one hundred thirty million, seventy-two thousand, five hundred forty-one".