102243019 has 2 divisors, whose sum is σ = 102243020. Its totient is φ = 102243018.

The previous prime is 102243017. The next prime is 102243059. The reversal of 102243019 is 910342201.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 102243019 - 2¹ = 102243017 is a prime.

It is a super-2 number, since 2×102243019² = 20907269868468722, which contains 22 as substring.

Together with 102243017, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (102243013) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51121509 + 51121510.

It is an arithmetic number, because the mean of its divisors is an integer number (51121510).

Almost surely, 2^102243019 is an apocalyptic number.

102243019 is a deficient number, since it is larger than the sum of its proper divisors (1).

102243019 is an equidigital number, since it uses as much as digits as its factorization.

102243019 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 432, while the sum is 22.

The square root of 102243019 is about 10111.5290139523. The cubic root of 102243019 is about 467.6036454120.

The spelling of 102243019 in words is "one hundred two million, two hundred forty-three thousand, nineteen".