3816842 has 4 divisors (see below), whose sum is σ = 5725266. Its totient is φ = 1908420.

The previous prime is 3816811. The next prime is 3816847. The reversal of 3816842 is 2486183.

Added to its reverse (2486183) it gives a triangular number (6303025 = T₃₅₅₀).

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., 3759721 + 57121 = 1939^2 + 239^2 .

It is a junction number, because it is equal to n+sod(n) for n = 3816799 and 3816808.

It is not an unprimeable number, because it can be changed into a prime (3816847) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 954209 + ... + 954212.

Almost surely, 2^3816842 is an apocalyptic number.

3816842 is a deficient number, since it is larger than the sum of its proper divisors (1908424).

3816842 is a wasteful number, since it uses less digits than its factorization.

3816842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1908423.

The product of its digits is 9216, while the sum is 32.

The square root of 3816842 is about 1953.6739748484. The cubic root of 3816842 is about 156.2792772872.

Adding to 3816842 its reverse (2486183), we get a triangular number (6303025 = T₃₅₅₀).

The spelling of 3816842 in words is "three million, eight hundred sixteen thousand, eight hundred forty-two".