1274420549 has 4 divisors (see below), whose sum is σ = 1278572064. Its totient is φ = 1270269036.

The previous prime is 1274420359. The next prime is 1274420561. The reversal of 1274420549 is 9450244721.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 9450244721 = 28181 ⋅335341.

It is a cyclic number.

It is not a de Polignac number, because 1274420549 - 2⁸ = 1274420293 is a prime.

It is a super-2 number, since 2×1274420549² = 3248295471426922802, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1274420149) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2075297 + ... + 2075910.

It is an arithmetic number, because the mean of its divisors is an integer number (319643016).

Almost surely, 2^1274420549 is an apocalyptic number.

It is an amenable number.

1274420549 is a deficient number, since it is larger than the sum of its proper divisors (4151515).

1274420549 is an equidigital number, since it uses as much as digits as its factorization.

1274420549 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4151514.

The product of its (nonzero) digits is 80640, while the sum is 38.

The square root of 1274420549 is about 35699.0272836670. The cubic root of 1274420549 is about 1084.1871488375.

The spelling of 1274420549 in words is "one billion, two hundred seventy-four million, four hundred twenty thousand, five hundred forty-nine".