102942001 has 2 divisors, whose sum is σ = 102942002. Its totient is φ = 102942000.

The previous prime is 102941999. The next prime is 102942023. The reversal of 102942001 is 100249201.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 77176225 + 25765776 = 8785^2 + 5076^2 .

It is a cyclic number.

It is not a de Polignac number, because 102942001 - 2¹ = 102941999 is a prime.

Together with 102941999, 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 102942001.

It is not a weakly prime, because it can be changed into another prime (102942071) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51471000 + 51471001.

It is an arithmetic number, because the mean of its divisors is an integer number (51471001).

Almost surely, 2^102942001 is an apocalyptic number.

It is an amenable number.

102942001 is a deficient number, since it is larger than the sum of its proper divisors (1).

102942001 is an equidigital number, since it uses as much as digits as its factorization.

102942001 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 144, while the sum is 19.

The square root of 102942001 is about 10146.0337570895. The cubic root of 102942001 is about 468.6668134219. Note that the first 3 decimals are identical.

The spelling of 102942001 in words is "one hundred two million, nine hundred forty-two thousand, one".