140530513 has 4 divisors (see below), whose sum is σ = 142509888. Its totient is φ = 138551140.

The previous prime is 140530501. The next prime is 140530531. The reversal of 140530513 is 315035041.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-140530513 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (140530553) 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, 989581 + ... + 989722.

It is an arithmetic number, because the mean of its divisors is an integer number (35627472).

Almost surely, 2^140530513 is an apocalyptic number.

It is an amenable number.

140530513 is a deficient number, since it is larger than the sum of its proper divisors (1979375).

140530513 is an equidigital number, since it uses as much as digits as its factorization.

140530513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1979374.

The product of its (nonzero) digits is 900, while the sum is 22.

The square root of 140530513 is about 11854.5566344760. The cubic root of 140530513 is about 519.9044609981.

Adding to 140530513 its reverse (315035041), we get a palindrome (455565554).

It can be divided in two parts, 14053051 and 3, that multiplied together give a triangular number (42159153 = T₉₁₈₂).

The spelling of 140530513 in words is "one hundred forty million, five hundred thirty thousand, five hundred thirteen".