1310042540 has 48 divisors (see below), whose sum is σ = 2777988864. Its totient is φ = 518918400.

The previous prime is 1310042479. The next prime is 1310042563. The reversal of 1310042540 is 452400131.

It is a super-2 number, since 2×1310042540² = 3432422913219303200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1321445 + ... + 1322435.

It is an arithmetic number, because the mean of its divisors is an integer number (57874768).

Almost surely, 2^1310042540 is an apocalyptic number.

1310042540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1310042540 is an abundant number, since it is smaller than the sum of its proper divisors (1467946324).

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

1310042540 is a wasteful number, since it uses less digits than its factorization.

1310042540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1578 (or 1576 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 1310042540 is about 36194.5098046651. The cubic root of 1310042540 is about 1094.1960251527.

Adding to 1310042540 its reverse (452400131), we get a palindrome (1762442671).

The spelling of 1310042540 in words is "one billion, three hundred ten million, forty-two thousand, five hundred forty".