1274221402 has 4 divisors (see below), whose sum is σ = 1911332106. Its totient is φ = 637110700.

The previous prime is 1274221393. The next prime is 1274221423. The reversal of 1274221402 is 2041224721.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2041224721 = 1451 ⋅1406771.

It can be written as a sum of positive squares in only one way, i.e., 1266719281 + 7502121 = 35591^2 + 2739^2 .

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 318555349 + ... + 318555352.

Almost surely, 2^1274221402 is an apocalyptic number.

1274221402 is a deficient number, since it is larger than the sum of its proper divisors (637110704).

1274221402 is an equidigital number, since it uses as much as digits as its factorization.

1274221402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 637110703.

The product of its (nonzero) digits is 1792, while the sum is 25.

The square root of 1274221402 is about 35696.2379250251. The cubic root of 1274221402 is about 1084.1306724868.

The spelling of 1274221402 in words is "one billion, two hundred seventy-four million, two hundred twenty-one thousand, four hundred two".