1274420149 has 2 divisors, whose sum is σ = 1274420150. Its totient is φ = 1274420148.

The previous prime is 1274420123. The next prime is 1274420159. The reversal of 1274420149 is 9410244721.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1238336100 + 36084049 = 35190^2 + 6007^2 .

It is a cyclic number.

It is not a de Polignac number, because 1274420149 - 2²⁹ = 737549237 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1274420159) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 637210074 + 637210075.

It is an arithmetic number, because the mean of its divisors is an integer number (637210075).

Almost surely, 2^1274420149 is an apocalyptic number.

It is an amenable number.

1274420149 is a deficient number, since it is larger than the sum of its proper divisors (1).

1274420149 is an equidigital number, since it uses as much as digits as its factorization.

1274420149 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16128, while the sum is 34.

The square root of 1274420149 is about 35699.0216812730. The cubic root of 1274420149 is about 1084.1870354069.

The spelling of 1274420149 in words is "one billion, two hundred seventy-four million, four hundred twenty thousand, one hundred forty-nine".