130042440 has 96 divisors (see below), whose sum is σ = 461073600. Its totient is φ = 31524480.

The previous prime is 130042417. The next prime is 130042463. The reversal of 130042440 is 44240031.

It is an interprime number because it is at equal distance from previous prime (130042417) and next prime (130042463).

It is a super-2 number, since 2×130042440² = 33822072402307200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 12460 + ... + 20379.

It is an arithmetic number, because the mean of its divisors is an integer number (4802850).

Almost surely, 2^130042440 is an apocalyptic number.

130042440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

130042440 is an abundant number, since it is smaller than the sum of its proper divisors (331031160).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

130042440 is a wasteful number, since it uses less digits than its factorization.

130042440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32867 (or 32860 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 130042440 is about 11403.6152162373. The cubic root of 130042440 is about 506.6348221753.

Adding to 130042440 its reverse (44240031), we get a palindrome (174282471).

The spelling of 130042440 in words is "one hundred thirty million, forty-two thousand, four hundred forty".