534742139 has 2 divisors, whose sum is σ = 534742140. Its totient is φ = 534742138.

The previous prime is 534742081. The next prime is 534742147. The reversal of 534742139 is 931247435.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-534742139 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (534744139) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 267371069 + 267371070.

It is an arithmetic number, because the mean of its divisors is an integer number (267371070).

Almost surely, 2^534742139 is an apocalyptic number.

534742139 is a deficient number, since it is larger than the sum of its proper divisors (1).

534742139 is an equidigital number, since it uses as much as digits as its factorization.

534742139 is an evil number, because the sum of its binary digits is even.

The product of its digits is 90720, while the sum is 38.

The square root of 534742139 is about 23124.4921890190. The cubic root of 534742139 is about 811.6736916574.

The spelling of 534742139 in words is "five hundred thirty-four million, seven hundred forty-two thousand, one hundred thirty-nine".