142837813 has 2 divisors, whose sum is σ = 142837814. Its totient is φ = 142837812.

The previous prime is 142837781. The next prime is 142837861. The reversal of 142837813 is 318738241.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 130713489 + 12124324 = 11433^2 + 3482^2 .

It is a cyclic number.

It is not a de Polignac number, because 142837813 - 2⁵ = 142837781 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (142835813) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71418906 + 71418907.

It is an arithmetic number, because the mean of its divisors is an integer number (71418907).

Almost surely, 2^142837813 is an apocalyptic number.

It is an amenable number.

142837813 is a deficient number, since it is larger than the sum of its proper divisors (1).

142837813 is an equidigital number, since it uses as much as digits as its factorization.

142837813 is an evil number, because the sum of its binary digits is even.

The product of its digits is 32256, while the sum is 37.

The square root of 142837813 is about 11951.4774400490. The cubic root of 142837813 is about 522.7343795590.

The spelling of 142837813 in words is "one hundred forty-two million, eight hundred thirty-seven thousand, eight hundred thirteen".