3721442 has 4 divisors (see below), whose sum is σ = 5582166. Its totient is φ = 1860720.

The previous prime is 3721439. The next prime is 3721451. The reversal of 3721442 is 2441273.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2441273 = 109 ⋅22397.

It can be written as a sum of positive squares in only one way, i.e., 1901641 + 1819801 = 1379^2 + 1349^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 930359 + ... + 930362.

Almost surely, 2^3721442 is an apocalyptic number.

3721442 is a deficient number, since it is larger than the sum of its proper divisors (1860724).

3721442 is a wasteful number, since it uses less digits than its factorization.

3721442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1860723.

The product of its digits is 1344, while the sum is 23.

The square root of 3721442 is about 1929.1039370651. The cubic root of 3721442 is about 154.9662361421.

The spelling of 3721442 in words is "three million, seven hundred twenty-one thousand, four hundred forty-two".