529242139 has 2 divisors, whose sum is σ = 529242140. Its totient is φ = 529242138.

The previous prime is 529242089. The next prime is 529242143. The reversal of 529242139 is 931242925.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-529242139 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 529242098 and 529242107.

It is not a weakly prime, because it can be changed into another prime (529243139) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 264621069 + 264621070.

It is an arithmetic number, because the mean of its divisors is an integer number (264621070).

Almost surely, 2^529242139 is an apocalyptic number.

529242139 is a deficient number, since it is larger than the sum of its proper divisors (1).

529242139 is an equidigital number, since it uses as much as digits as its factorization.

529242139 is an evil number, because the sum of its binary digits is even.

The product of its digits is 38880, while the sum is 37.

The square root of 529242139 is about 23005.2632890823. The cubic root of 529242139 is about 808.8813185902.

The spelling of 529242139 in words is "five hundred twenty-nine million, two hundred forty-two thousand, one hundred thirty-nine".