102405629 has 2 divisors, whose sum is σ = 102405630. Its totient is φ = 102405628.

The previous prime is 102405623. The next prime is 102405701. The reversal of 102405629 is 926504201.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 101808100 + 597529 = 10090^2 + 773^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-102405629 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 (102405623) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51202814 + 51202815.

It is an arithmetic number, because the mean of its divisors is an integer number (51202815).

Almost surely, 2^102405629 is an apocalyptic number.

It is an amenable number.

102405629 is a deficient number, since it is larger than the sum of its proper divisors (1).

102405629 is an equidigital number, since it uses as much as digits as its factorization.

102405629 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4320, while the sum is 29.

The square root of 102405629 is about 10119.5666409190. The cubic root of 102405629 is about 467.8514105069.

The spelling of 102405629 in words is "one hundred two million, four hundred five thousand, six hundred twenty-nine".