74031121 has 2 divisors, whose sum is σ = 74031122. Its totient is φ = 74031120.

The previous prime is 74031091. The next prime is 74031143. The reversal of 74031121 is 12113047.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 60606225 + 13424896 = 7785^2 + 3664^2 .

It is an emirp because it is prime and its reverse (12113047) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 74031121 - 2¹³ = 74022929 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (74011121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37015560 + 37015561.

It is an arithmetic number, because the mean of its divisors is an integer number (37015561).

Almost surely, 2^74031121 is an apocalyptic number.

It is an amenable number.

74031121 is a deficient number, since it is larger than the sum of its proper divisors (1).

74031121 is an equidigital number, since it uses as much as digits as its factorization.

74031121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 168, while the sum is 19.

The square root of 74031121 is about 8604.1339482832. The cubic root of 74031121 is about 419.8924913795.

Adding to 74031121 its reverse (12113047), we get a palindrome (86144168).

The spelling of 74031121 in words is "seventy-four million, thirty-one thousand, one hundred twenty-one".