3737421 has 10 divisors (see below), whose sum is σ = 5583182. Its totient is φ = 2491560.

The previous prime is 3737417. The next prime is 3737423. The reversal of 3737421 is 1247373.

3737421 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 2368521 + 1368900 = 1539^2 + 1170^2 .

It is not a de Polignac number, because 3737421 - 2² = 3737417 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an Ulam number.

It is a Duffinian number.

3737421 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3737423) 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 9 ways as a sum of consecutive naturals, for example, 22990 + ... + 23151.

Almost surely, 2^3737421 is an apocalyptic number.

It is an amenable number.

3737421 is a deficient number, since it is larger than the sum of its proper divisors (1845761).

3737421 is an equidigital number, since it uses as much as digits as its factorization.

3737421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46153 (or 46144 counting only the distinct ones).

The product of its digits is 3528, while the sum is 27.

The square root of 3737421 is about 1933.2410610164. The cubic root of 3737421 is about 155.1877156864.

The spelling of 3737421 in words is "three million, seven hundred thirty-seven thousand, four hundred twenty-one".