130015405 has 32 divisors (see below), whose sum is σ = 179885664. Its totient is φ = 89358336.

The previous prime is 130015399. The next prime is 130015411. The reversal of 130015405 is 504510031.

It is an interprime number because it is at equal distance from previous prime (130015399) and next prime (130015411).

It can be written as a sum of positive squares in 16 ways, for example, as 70509609 + 59505796 = 8397^2 + 7714^2 .

It is a cyclic number.

It is not a de Polignac number, because 130015405 - 2¹¹ = 130013357 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 106579 + ... + 107791.

It is an arithmetic number, because the mean of its divisors is an integer number (5621427).

Almost surely, 2^130015405 is an apocalyptic number.

It is an amenable number.

130015405 is a deficient number, since it is larger than the sum of its proper divisors (49870259).

130015405 is a wasteful number, since it uses less digits than its factorization.

130015405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1345.

The product of its (nonzero) digits is 300, while the sum is 19.

The square root of 130015405 is about 11402.4297849187. The cubic root of 130015405 is about 506.5997110180.

Adding to 130015405 its reverse (504510031), we get a palindrome (634525436).

The spelling of 130015405 in words is "one hundred thirty million, fifteen thousand, four hundred five".