102131429 has 2 divisors, whose sum is σ = 102131430. Its totient is φ = 102131428.

The previous prime is 102131413. The next prime is 102131443. The reversal of 102131429 is 924131201.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 62378404 + 39753025 = 7898^2 + 6305^2 .

It is a cyclic number.

It is not a de Polignac number, because 102131429 - 2⁴ = 102131413 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (102101429) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51065714 + 51065715.

It is an arithmetic number, because the mean of its divisors is an integer number (51065715).

Almost surely, 2^102131429 is an apocalyptic number.

It is an amenable number.

102131429 is a deficient number, since it is larger than the sum of its proper divisors (1).

102131429 is an equidigital number, since it uses as much as digits as its factorization.

102131429 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 432, while the sum is 23.

The square root of 102131429 is about 10106.0095487784. The cubic root of 102131429 is about 467.4334662767.

The spelling of 102131429 in words is "one hundred two million, one hundred thirty-one thousand, four hundred twenty-nine".