3612421 has 8 divisors (see below), whose sum is σ = 3755160. Its totient is φ = 3472128.

The previous prime is 3612419. The next prime is 3612431. The reversal of 3612421 is 1242163.

It can be written as a sum of positive squares in 4 ways, for example, as 408321 + 3204100 = 639^2 + 1790^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 3612421 - 2¹ = 3612419 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3612431) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2745 + ... + 3841.

It is an arithmetic number, because the mean of its divisors is an integer number (469395).

Almost surely, 2^3612421 is an apocalyptic number.

It is an amenable number.

3612421 is a deficient number, since it is larger than the sum of its proper divisors (142739).

3612421 is a wasteful number, since it uses less digits than its factorization.

3612421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1223.

The product of its digits is 288, while the sum is 19.

The square root of 3612421 is about 1900.6369984824. The cubic root of 3612421 is about 153.4379495053.

Adding to 3612421 its reverse (1242163), we get a palindrome (4854584).

The spelling of 3612421 in words is "three million, six hundred twelve thousand, four hundred twenty-one".