102621427 has 2 divisors, whose sum is σ = 102621428. Its totient is φ = 102621426.

The previous prime is 102621419. The next prime is 102621443. The reversal of 102621427 is 724126201.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 102621427 - 2³ = 102621419 is a prime.

It is not a weakly prime, because it can be changed into another prime (102621487) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51310713 + 51310714.

It is an arithmetic number, because the mean of its divisors is an integer number (51310714).

Almost surely, 2^102621427 is an apocalyptic number.

102621427 is a deficient number, since it is larger than the sum of its proper divisors (1).

102621427 is an equidigital number, since it uses as much as digits as its factorization.

102621427 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1344, while the sum is 25.

The square root of 102621427 is about 10130.2234427479. The cubic root of 102621427 is about 468.1798122571.

Adding to 102621427 its reverse (724126201), we get a palindrome (826747628).

The spelling of 102621427 in words is "one hundred two million, six hundred twenty-one thousand, four hundred twenty-seven".