1300142540 has 12 divisors (see below), whose sum is σ = 2730299376. Its totient is φ = 520057008.

The previous prime is 1300142531. The next prime is 1300142549. The reversal of 1300142540 is 452410031.

It is an interprime number because it is at equal distance from previous prime (1300142531) and next prime (1300142549).

It is a Harshad number since it is a multiple of its sum of digits (20), and also a Moran number because the ratio is a prime number: 65007127 = 1300142540 / (1 + 3 + 0 + 0 + 1 + 4 + 2 + 5 + 4 + 0).

It is not an unprimeable number, because it can be changed into a prime (1300142549) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32503544 + ... + 32503583.

It is an arithmetic number, because the mean of its divisors is an integer number (227524948).

Almost surely, 2^1300142540 is an apocalyptic number.

1300142540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1300142540 is an abundant number, since it is smaller than the sum of its proper divisors (1430156836).

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

1300142540 is a wasteful number, since it uses less digits than its factorization.

1300142540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65007136 (or 65007134 counting only the distinct ones).

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

The square root of 1300142540 is about 36057.4893746084. The cubic root of 1300142540 is about 1091.4327706140.

Adding to 1300142540 its reverse (452410031), we get a palindrome (1752552571).

The spelling of 1300142540 in words is "one billion, three hundred million, one hundred forty-two thousand, five hundred forty".