102942811 has 2 divisors, whose sum is σ = 102942812. Its totient is φ = 102942810.

The previous prime is 102942809. The next prime is 102942863. The reversal of 102942811 is 118249201.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 102942811 - 2¹ = 102942809 is a prime.

Together with 102942809, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 102942811.

It is not a weakly prime, because it can be changed into another prime (102942311) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51471405 + 51471406.

It is an arithmetic number, because the mean of its divisors is an integer number (51471406).

Almost surely, 2^102942811 is an apocalyptic number.

102942811 is a deficient number, since it is larger than the sum of its proper divisors (1).

102942811 is an equidigital number, since it uses as much as digits as its factorization.

102942811 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1152, while the sum is 28.

The square root of 102942811 is about 10146.0736740869. The cubic root of 102942811 is about 468.6680426549.

The spelling of 102942811 in words is "one hundred two million, nine hundred forty-two thousand, eight hundred eleven".