3702121 has 4 divisors (see below), whose sum is σ = 3706000. Its totient is φ = 3698244.

The previous prime is 3702119. The next prime is 3702161. The reversal of 3702121 is 1212073.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 1212073 = 673 ⋅1801.

It is a cyclic number.

It is not a de Polignac number, because 3702121 - 2¹ = 3702119 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3702095 and 3702104.

It is not an unprimeable number, because it can be changed into a prime (3702161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 610 + ... + 2788.

It is an arithmetic number, because the mean of its divisors is an integer number (926500).

Almost surely, 2^3702121 is an apocalyptic number.

It is an amenable number.

3702121 is a deficient number, since it is larger than the sum of its proper divisors (3879).

3702121 is a wasteful number, since it uses less digits than its factorization.

3702121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3878.

The product of its (nonzero) digits is 84, while the sum is 16.

The square root of 3702121 is about 1924.0896548758. The cubic root of 3702121 is about 154.6975858676.

Adding to 3702121 its reverse (1212073), we get a palindrome (4914194).

The spelling of 3702121 in words is "three million, seven hundred two thousand, one hundred twenty-one".