102745969 has 2 divisors, whose sum is σ = 102745970. Its totient is φ = 102745968.

The previous prime is 102745933. The next prime is 102745999. The reversal of 102745969 is 969547201.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 69105969 + 33640000 = 8313^2 + 5800^2 .

It is a cyclic number.

It is not a de Polignac number, because 102745969 - 2²¹ = 100648817 is a prime.

It is a super-2 number, since 2×102745969² = 21113468291497922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (102745999) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51372984 + 51372985.

It is an arithmetic number, because the mean of its divisors is an integer number (51372985).

Almost surely, 2^102745969 is an apocalyptic number.

It is an amenable number.

102745969 is a deficient number, since it is larger than the sum of its proper divisors (1).

102745969 is an equidigital number, since it uses as much as digits as its factorization.

102745969 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 136080, while the sum is 43.

The square root of 102745969 is about 10136.3686298398. The cubic root of 102745969 is about 468.3691309992.

The spelling of 102745969 in words is "one hundred two million, seven hundred forty-five thousand, nine hundred sixty-nine".