102000001 has 4 divisors (see below), whose sum is σ = 103010004. Its totient is φ = 100990000.

The previous prime is 101999969. The next prime is 102000023. The reversal of 102000001 is 100000201.

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

It can be written as a sum of positive squares in 2 ways, for example, as 46512400 + 55487601 = 6820^2 + 7449^2 .

It is a cyclic number.

It is not a de Polignac number, because 102000001 - 2⁵ = 101999969 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (102000061) 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, 504850 + ... + 505051.

It is an arithmetic number, because the mean of its divisors is an integer number (25752501).

Almost surely, 2^102000001 is an apocalyptic number.

It is an amenable number.

102000001 is a deficient number, since it is larger than the sum of its proper divisors (1010003).

102000001 is a wasteful number, since it uses less digits than its factorization.

102000001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1010002.

The product of its (nonzero) digits is 2, while the sum is 4.

The square root of 102000001 is about 10099.5049878695. The cubic root of 102000001 is about 467.2328743624.

Adding to 102000001 its reverse (100000201), we get a palindrome (202000202).

The spelling of 102000001 in words is "one hundred two million, one", and thus it is an aban number.