1520130040 has 64 divisors (see below), whose sum is σ = 4018260960. Its totient is φ = 510251520.

The previous prime is 1520130019. The next prime is 1520130041. The reversal of 1520130040 is 400310251.

It is a junction number, because it is equal to n+sod(n) for n = 1520129996 and 1520130023.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1520130041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 127159 + ... + 138598.

Almost surely, 2^1520130040 is an apocalyptic number.

1520130040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1520130040 is an abundant number, since it is smaller than the sum of its proper divisors (2498130920).

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

1520130040 is a wasteful number, since it uses less digits than its factorization.

1520130040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 265792 (or 265788 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 16.

The square root of 1520130040 is about 38988.8450713791. The cubic root of 1520130040 is about 1149.8122037389.

Adding to 1520130040 its reverse (400310251), we get a palindrome (1920440291).

The spelling of 1520130040 in words is "one billion, five hundred twenty million, one hundred thirty thousand, forty".