274207421 has 2 divisors, whose sum is σ = 274207422. Its totient is φ = 274207420.

The previous prime is 274207363. The next prime is 274207459. The reversal of 274207421 is 124702472.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 239042521 + 35164900 = 15461^2 + 5930^2 .

It is a cyclic number.

It is not a de Polignac number, because 274207421 - 2¹⁴ = 274191037 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (274206421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 137103710 + 137103711.

It is an arithmetic number, because the mean of its divisors is an integer number (137103711).

Almost surely, 2^274207421 is an apocalyptic number.

It is an amenable number.

274207421 is a deficient number, since it is larger than the sum of its proper divisors (1).

274207421 is an equidigital number, since it uses as much as digits as its factorization.

274207421 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6272, while the sum is 29.

The square root of 274207421 is about 16559.2095523911. The cubic root of 274207421 is about 649.6703819899.

Adding to 274207421 its reverse (124702472), we get a palindrome (398909893).

The spelling of 274207421 in words is "two hundred seventy-four million, two hundred seven thousand, four hundred twenty-one".