3857842 has 12 divisors (see below), whose sum is σ = 5951610. Its totient is φ = 1875456.

The previous prime is 3857839. The next prime is 3857863. The reversal of 3857842 is 2487583.

It can be written as a sum of positive squares in 3 ways, for example, as 3575881 + 281961 = 1891^2 + 531^2 .

It is a Harshad number since it is a multiple of its sum of digits (37).

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, 2034 + ... + 3442.

Almost surely, 2^3857842 is an apocalyptic number.

3857842 is a deficient number, since it is larger than the sum of its proper divisors (2093768).

3857842 is a wasteful number, since it uses less digits than its factorization.

3857842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1485 (or 1448 counting only the distinct ones).

The product of its digits is 53760, while the sum is 37.

The square root of 3857842 is about 1964.1389971181. The cubic root of 3857842 is about 156.8368624720.

The spelling of 3857842 in words is "three million, eight hundred fifty-seven thousand, eight hundred forty-two".