102402427 has 2 divisors, whose sum is σ = 102402428. Its totient is φ = 102402426.

The previous prime is 102402397. The next prime is 102402437. The reversal of 102402427 is 724204201.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 102402427 - 2¹¹ = 102400379 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 102402398 and 102402407.

It is not a weakly prime, because it can be changed into another prime (102402437) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51201213 + 51201214.

It is an arithmetic number, because the mean of its divisors is an integer number (51201214).

Almost surely, 2^102402427 is an apocalyptic number.

102402427 is a deficient number, since it is larger than the sum of its proper divisors (1).

102402427 is an equidigital number, since it uses as much as digits as its factorization.

102402427 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 896, while the sum is 22.

The square root of 102402427 is about 10119.4084313264. The cubic root of 102402427 is about 467.8465342260.

Adding to 102402427 its reverse (724204201), we get a palindrome (826606628).

The spelling of 102402427 in words is "one hundred two million, four hundred two thousand, four hundred twenty-seven".