1999102 has 12 divisors (see below), whose sum is σ = 3488400. Its totient is φ = 856716.

The previous prime is 1999099. The next prime is 1999103. The reversal of 1999102 is 2019991.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1999103) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 10102 + ... + 10297.

It is an arithmetic number, because the mean of its divisors is an integer number (290700).

2^1999102 is an apocalyptic number.

1999102 is a deficient number, since it is larger than the sum of its proper divisors (1489298).

1999102 is a wasteful number, since it uses less digits than its factorization.

1999102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20415 (or 20408 counting only the distinct ones).

The product of its (nonzero) digits is 1458, while the sum is 31.

The square root of 1999102 is about 1413.8960357820. The cubic root of 1999102 is about 125.9732453482.

The spelling of 1999102 in words is "one million, nine hundred ninety-nine thousand, one hundred two".