130920250 has 16 divisors (see below), whose sum is σ = 245083176. Its totient is φ = 52368000.

The previous prime is 130920217. The next prime is 130920253. The reversal of 130920250 is 52029031.

It can be written as a sum of positive squares in 4 ways, for example, as 69939769 + 60980481 = 8363^2 + 7809^2 .

It is a super-2 number, since 2×130920250² = 34280223720125000, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (130920253) 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, 261591 + ... + 262090.

Almost surely, 2^130920250 is an apocalyptic number.

130920250 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

130920250 is a deficient number, since it is larger than the sum of its proper divisors (114162926).

130920250 is an equidigital number, since it uses as much as digits as its factorization.

130920250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 523698 (or 523688 counting only the distinct ones).

The product of its (nonzero) digits is 540, while the sum is 22.

The square root of 130920250 is about 11442.0387169420. The cubic root of 130920250 is about 507.7722256817.

Adding to 130920250 its reverse (52029031), we get a palindrome (182949281).

The spelling of 130920250 in words is "one hundred thirty million, nine hundred twenty thousand, two hundred fifty".