74023121 has 2 divisors, whose sum is σ = 74023122. Its totient is φ = 74023120.

The previous prime is 74023091. The next prime is 74023127. The reversal of 74023121 is 12132047.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 72063121 + 1960000 = 8489^2 + 1400^2 .

It is an emirp because it is prime and its reverse (12132047) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 74023121 - 2⁶ = 74023057 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 74023093 and 74023102.

It is not a weakly prime, because it can be changed into another prime (74023127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37011560 + 37011561.

It is an arithmetic number, because the mean of its divisors is an integer number (37011561).

Almost surely, 2^74023121 is an apocalyptic number.

It is an amenable number.

74023121 is a deficient number, since it is larger than the sum of its proper divisors (1).

74023121 is an equidigital number, since it uses as much as digits as its factorization.

74023121 is an evil number, because the sum of its binary digits is even.

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

The square root of 74023121 is about 8603.6690429142. The cubic root of 74023121 is about 419.8773659345.

Adding to 74023121 its reverse (12132047), we get a palindrome (86155168).

The spelling of 74023121 in words is "seventy-four million, twenty-three thousand, one hundred twenty-one".