102101994 has 12 divisors (see below), whose sum is σ = 221221026. Its totient is φ = 34033992.

The previous prime is 102101971. The next prime is 102102019. The reversal of 102101994 is 499101201.

It can be written as a sum of positive squares in only one way, i.e., 73874025 + 28227969 = 8595^2 + 5313^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2836149 + ... + 2836184.

Almost surely, 2^102101994 is an apocalyptic number.

102101994 is an abundant number, since it is smaller than the sum of its proper divisors (119119032).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

102101994 is a wasteful number, since it uses less digits than its factorization.

102101994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5672341 (or 5672338 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 27.

The square root of 102101994 is about 10104.5531321281. The cubic root of 102101994 is about 467.3885560852.

The spelling of 102101994 in words is "one hundred two million, one hundred one thousand, nine hundred ninety-four".