140005013 has 4 divisors (see below), whose sum is σ = 148240620. Its totient is φ = 131769408.

The previous prime is 140004973. The next prime is 140005049. The reversal of 140005013 is 310500041.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 310500041 = 37 ⋅8391893.

It can be written as a sum of positive squares in 2 ways, for example, as 114532804 + 25472209 = 10702^2 + 5047^2 .

It is a cyclic number.

It is not a de Polignac number, because 140005013 - 2²⁶ = 72896149 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140001013) 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, 4117778 + ... + 4117811.

It is an arithmetic number, because the mean of its divisors is an integer number (37060155).

Almost surely, 2^140005013 is an apocalyptic number.

It is an amenable number.

140005013 is a deficient number, since it is larger than the sum of its proper divisors (8235607).

140005013 is an equidigital number, since it uses as much as digits as its factorization.

140005013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8235606.

The product of its (nonzero) digits is 60, while the sum is 14.

The square root of 140005013 is about 11832.3714022169. The cubic root of 140005013 is about 519.2556077237.

Adding to 140005013 its reverse (310500041), we get a palindrome (450505054).

The spelling of 140005013 in words is "one hundred forty million, five thousand, thirteen".