1899142 has 12 divisors (see below), whose sum is σ = 3313980. Its totient is φ = 813876.

The previous prime is 1899137. The next prime is 1899167. The reversal of 1899142 is 2419981.

It is a junction number, because it is equal to n+sod(n) for n = 1899098 and 1899107.

It is a congruent number.

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, 9592 + ... + 9787.

It is an arithmetic number, because the mean of its divisors is an integer number (276165).

2^1899142 is an apocalyptic number.

1899142 is a deficient number, since it is larger than the sum of its proper divisors (1414838).

1899142 is a wasteful number, since it uses less digits than its factorization.

1899142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19395 (or 19388 counting only the distinct ones).

The product of its digits is 5184, while the sum is 34.

The square root of 1899142 is about 1378.0936107536. The cubic root of 1899142 is about 123.8375865335.

The spelling of 1899142 in words is "one million, eight hundred ninety-nine thousand, one hundred forty-two".