102050906 has 4 divisors (see below), whose sum is σ = 153076362. Its totient is φ = 51025452.

The previous prime is 102050899. The next prime is 102050909. The reversal of 102050906 is 609050201.

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

It can be written as a sum of positive squares in only one way, i.e., 64657681 + 37393225 = 8041^2 + 6115^2 .

It is not an unprimeable number, because it can be changed into a prime (102050909) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25512725 + ... + 25512728.

Almost surely, 2^102050906 is an apocalyptic number.

102050906 is a deficient number, since it is larger than the sum of its proper divisors (51025456).

102050906 is an equidigital number, since it uses as much as digits as its factorization.

102050906 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51025455.

The product of its (nonzero) digits is 540, while the sum is 23.

The square root of 102050906 is about 10102.0248465345. The cubic root of 102050906 is about 467.3105885246.

The spelling of 102050906 in words is "one hundred two million, fifty thousand, nine hundred six".