102002999971 has 4 divisors (see below), whose sum is σ = 102257371944. Its totient is φ = 101748628000.

The previous prime is 102002999963. The next prime is 102003000037. The reversal of 102002999971 is 179999200201.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 102002999971 - 2³ = 102002999963 is a prime.

It is a super-2 number, since 2×102002999971² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (102002999471) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 127185385 + ... + 127186186.

It is an arithmetic number, because the mean of its divisors is an integer number (25564342986).

Almost surely, 2^102002999971 is an apocalyptic number.

102002999971 is a deficient number, since it is larger than the sum of its proper divisors (254371973).

102002999971 is an equidigital number, since it uses as much as digits as its factorization.

102002999971 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 254371972.

The product of its (nonzero) digits is 183708, while the sum is 49.

The spelling of 102002999971 in words is "one hundred two billion, two million, nine hundred ninety-nine thousand, nine hundred seventy-one".