102431425 has 6 divisors (see below), whose sum is σ = 127014998. Its totient is φ = 81945120.

The previous prime is 102431419. The next prime is 102431437. The reversal of 102431425 is 524134201.

It can be written as a sum of positive squares in 3 ways, for example, as 97969 + 102333456 = 313^2 + 10116^2 .

It is not a de Polignac number, because 102431425 - 2⁷ = 102431297 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 102431396 and 102431405.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2048604 + ... + 2048653.

Almost surely, 2^102431425 is an apocalyptic number.

It is an amenable number.

102431425 is a deficient number, since it is larger than the sum of its proper divisors (24583573).

102431425 is an equidigital number, since it uses as much as digits as its factorization.

102431425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4097267 (or 4097262 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 102431425 is about 10120.8411211717. The cubic root of 102431425 is about 467.8906911658.

Adding to 102431425 its reverse (524134201), we get a palindrome (626565626).

The spelling of 102431425 in words is "one hundred two million, four hundred thirty-one thousand, four hundred twenty-five".