3870442 has 4 divisors (see below), whose sum is σ = 5805666. Its totient is φ = 1935220.

The previous prime is 3870439. The next prime is 3870457. The reversal of 3870442 is 2440783.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2440783 = 23 ⋅106121.

It can be written as a sum of positive squares in only one way, i.e., 3837681 + 32761 = 1959^2 + 181^2 .

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 3870442.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 967609 + ... + 967612.

Almost surely, 2^3870442 is an apocalyptic number.

3870442 is a deficient number, since it is larger than the sum of its proper divisors (1935224).

3870442 is a wasteful number, since it uses less digits than its factorization.

3870442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1935223.

The product of its (nonzero) digits is 5376, while the sum is 28.

The square root of 3870442 is about 1967.3438946966. The cubic root of 3870442 is about 157.0074238852.

The spelling of 3870442 in words is "three million, eight hundred seventy thousand, four hundred forty-two".