140578013 has 4 divisors (see below), whose sum is σ = 142271808. Its totient is φ = 138884220.

The previous prime is 140577967. The next prime is 140578021. The reversal of 140578013 is 310875041.

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, and also an emirpimes, since its reverse is a distinct semiprime: 310875041 = 29 ⋅10719829.

It is a cyclic number.

It is not a de Polignac number, because 140578013 - 2⁸ = 140577757 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140578033) 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, 846773 + ... + 846938.

It is an arithmetic number, because the mean of its divisors is an integer number (35567952).

Almost surely, 2^140578013 is an apocalyptic number.

It is an amenable number.

140578013 is a deficient number, since it is larger than the sum of its proper divisors (1693795).

140578013 is an equidigital number, since it uses as much as digits as its factorization.

140578013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1693794.

The product of its (nonzero) digits is 3360, while the sum is 29.

The square root of 140578013 is about 11856.5599142416. The cubic root of 140578013 is about 519.9630311489.

The spelling of 140578013 in words is "one hundred forty million, five hundred seventy-eight thousand, thirteen".