142513109 has 2 divisors, whose sum is σ = 142513110. Its totient is φ = 142513108.

The previous prime is 142513081. The next prime is 142513127. The reversal of 142513109 is 901315241.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 88078225 + 54434884 = 9385^2 + 7378^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-142513109 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (142513199) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71256554 + 71256555.

It is an arithmetic number, because the mean of its divisors is an integer number (71256555).

Almost surely, 2^142513109 is an apocalyptic number.

It is an amenable number.

142513109 is a deficient number, since it is larger than the sum of its proper divisors (1).

142513109 is an equidigital number, since it uses as much as digits as its factorization.

142513109 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1080, while the sum is 26.

The square root of 142513109 is about 11937.8854492745. The cubic root of 142513109 is about 522.3379795718.

The spelling of 142513109 in words is "one hundred forty-two million, five hundred thirteen thousand, one hundred nine".