3721123 has 4 divisors (see below), whose sum is σ = 4252720. Its totient is φ = 3189528.

The previous prime is 3721117. The next prime is 3721129. The reversal of 3721123 is 3211273.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (3721117) and next prime (3721129).

It is a cyclic number.

It is not a de Polignac number, because 3721123 - 2¹⁷ = 3590051 is a prime.

It is a super-2 number, since 2×3721123² = 27693512762258, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 3721123.

It is not an unprimeable number, because it can be changed into a prime (3721129) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 265788 + ... + 265801.

It is an arithmetic number, because the mean of its divisors is an integer number (1063180).

Almost surely, 2^3721123 is an apocalyptic number.

3721123 is a deficient number, since it is larger than the sum of its proper divisors (531597).

3721123 is an equidigital number, since it uses as much as digits as its factorization.

3721123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 531596.

The product of its digits is 252, while the sum is 19.

The square root of 3721123 is about 1929.0212544189. The cubic root of 3721123 is about 154.9618081415.

Adding to 3721123 its reverse (3211273), we get a palindrome (6932396).

It can be divided in two parts, 3721 and 123, that added together give a square (3844 = 62²).

The spelling of 3721123 in words is "three million, seven hundred twenty-one thousand, one hundred twenty-three".