142504013 has 4 divisors (see below), whose sum is σ = 150886620. Its totient is φ = 134121408.

The previous prime is 142504003. The next prime is 142504073. The reversal of 142504013 is 310405241.

142504013 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 310405241 = 29 ⋅10703629.

It can be written as a sum of positive squares in 2 ways, for example, as 124500964 + 18003049 = 11158^2 + 4243^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-142504013 is a prime.

It is a super-2 number, since 2×142504013² = 40614787442208338, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142504003) 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, 4191278 + ... + 4191311.

It is an arithmetic number, because the mean of its divisors is an integer number (37721655).

Almost surely, 2^142504013 is an apocalyptic number.

It is an amenable number.

142504013 is a deficient number, since it is larger than the sum of its proper divisors (8382607).

142504013 is an equidigital number, since it uses as much as digits as its factorization.

142504013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8382606.

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

The square root of 142504013 is about 11937.5044712034. The cubic root of 142504013 is about 522.3268664717.

Adding to 142504013 its reverse (310405241), we get a palindrome (452909254).

The spelling of 142504013 in words is "one hundred forty-two million, five hundred four thousand, thirteen".