102001279 has 2 divisors, whose sum is σ = 102001280. Its totient is φ = 102001278.

The previous prime is 102001271. The next prime is 102001313. The reversal of 102001279 is 972100201.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 102001279 - 2³ = 102001271 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (102001271) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51000639 + 51000640.

It is an arithmetic number, because the mean of its divisors is an integer number (51000640).

Almost surely, 2^102001279 is an apocalyptic number.

102001279 is a deficient number, since it is larger than the sum of its proper divisors (1).

102001279 is an equidigital number, since it uses as much as digits as its factorization.

102001279 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 252, while the sum is 22.

The square root of 102001279 is about 10099.5682580990. The cubic root of 102001279 is about 467.2348257386.

The spelling of 102001279 in words is "one hundred two million, one thousand, two hundred seventy-nine".