3742121 has 2 divisors, whose sum is σ = 3742122. Its totient is φ = 3742120.

The previous prime is 3742117. The next prime is 3742127. The reversal of 3742121 is 1212473.

3742121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3279721 + 462400 = 1811^2 + 680^2 .

It is an emirp because it is prime and its reverse (1212473) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3742121 - 2² = 3742117 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 3742093 and 3742102.

It is not a weakly prime, because it can be changed into another prime (3742127) 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 as a sum of consecutive naturals, namely, 1871060 + 1871061.

It is an arithmetic number, because the mean of its divisors is an integer number (1871061).

Almost surely, 2^3742121 is an apocalyptic number.

It is an amenable number.

3742121 is a deficient number, since it is larger than the sum of its proper divisors (1).

3742121 is an equidigital number, since it uses as much as digits as its factorization.

3742121 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 336, while the sum is 20.

The square root of 3742121 is about 1934.4562543516. The cubic root of 3742121 is about 155.2527406267.

Adding to 3742121 its reverse (1212473), we get a palindrome (4954594).

The spelling of 3742121 in words is "three million, seven hundred forty-two thousand, one hundred twenty-one".