3721042 has 24 divisors (see below), whose sum is σ = 6159780. Its totient is φ = 1684800.

The previous prime is 3721033. The next prime is 3721049. The reversal of 3721042 is 2401273.

3721042 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Cunningham number, because it is equal to 1929²+1.

It can be written as a sum of positive squares in 6 ways, for example, as 1874161 + 1846881 = 1369^2 + 1359^2 .

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (3721049) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 34084 + ... + 34192.

Almost surely, 2^3721042 is an apocalyptic number.

3721042 is a deficient number, since it is larger than the sum of its proper divisors (2438738).

3721042 is a wasteful number, since it uses less digits than its factorization.

3721042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 238 (or 225 counting only the distinct ones).

The product of its (nonzero) digits is 336, while the sum is 19.

The square root of 3721042 is about 1929.0002592016. Note that the first 3 decimals coincide. The cubic root of 3721042 is about 154.9606837500.

The spelling of 3721042 in words is "three million, seven hundred twenty-one thousand, forty-two".