102090801 has 8 divisors (see below), whose sum is σ = 136551744. Its totient is φ = 67845200.

The previous prime is 102090799. The next prime is 102090809. The reversal of 102090801 is 108090201.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 102090801 - 2¹ = 102090799 is a prime.

It is not an unprimeable number, because it can be changed into a prime (102090809) 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 in 7 ways as a sum of consecutive naturals, for example, 52725 + ... + 54626.

It is an arithmetic number, because the mean of its divisors is an integer number (17068968).

Almost surely, 2^102090801 is an apocalyptic number.

It is an amenable number.

102090801 is a deficient number, since it is larger than the sum of its proper divisors (34460943).

102090801 is a wasteful number, since it uses less digits than its factorization.

102090801 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107671.

The product of its (nonzero) digits is 144, while the sum is 21.

The square root of 102090801 is about 10103.9992577197. Note that the first 3 decimals coincide. The cubic root of 102090801 is about 467.3714761991.

The spelling of 102090801 in words is "one hundred two million, ninety thousand, eight hundred one".