102620393 has 2 divisors, whose sum is σ = 102620394. Its totient is φ = 102620392.

The previous prime is 102620389. The next prime is 102620437. The reversal of 102620393 is 393026201.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 54567769 + 48052624 = 7387^2 + 6932^2 .

It is an emirp because it is prime and its reverse (393026201) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 102620393 - 2² = 102620389 is a prime.

It is not a weakly prime, because it can be changed into another prime (102620333) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51310196 + 51310197.

It is an arithmetic number, because the mean of its divisors is an integer number (51310197).

Almost surely, 2^102620393 is an apocalyptic number.

It is an amenable number.

102620393 is a deficient number, since it is larger than the sum of its proper divisors (1).

102620393 is an equidigital number, since it uses as much as digits as its factorization.

102620393 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1944, while the sum is 26.

The square root of 102620393 is about 10130.1724072199. The cubic root of 102620393 is about 468.1782398125.

Adding to 102620393 its reverse (393026201), we get a palindrome (495646594).

The spelling of 102620393 in words is "one hundred two million, six hundred twenty thousand, three hundred ninety-three".