102620281 has 2 divisors, whose sum is σ = 102620282. Its totient is φ = 102620280.

The previous prime is 102620267. The next prime is 102620321. The reversal of 102620281 is 182026201.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 63043600 + 39576681 = 7940^2 + 6291^2 .

It is a cyclic number.

It is not a de Polignac number, because 102620281 - 2¹¹ = 102618233 is a prime.

It is a super-2 number, since 2×102620281² = 21061844145037922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (102620251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51310140 + 51310141.

It is an arithmetic number, because the mean of its divisors is an integer number (51310141).

Almost surely, 2^102620281 is an apocalyptic number.

It is an amenable number.

102620281 is a deficient number, since it is larger than the sum of its proper divisors (1).

102620281 is an equidigital number, since it uses as much as digits as its factorization.

102620281 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 384, while the sum is 22.

The square root of 102620281 is about 10130.1668791782. The cubic root of 102620281 is about 468.1780694890.

Adding to 102620281 its reverse (182026201), we get a palindrome (284646482).

The spelling of 102620281 in words is "one hundred two million, six hundred twenty thousand, two hundred eighty-one".