1272801274 has 4 divisors (see below), whose sum is σ = 1909201914. Its totient is φ = 636400636.

The previous prime is 1272801259. The next prime is 1272801289. The reversal of 1272801274 is 4721082721.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (1272801259) and next prime (1272801289).

It can be written as a sum of positive squares in only one way, i.e., 1196675649 + 76125625 = 34593^2 + 8725^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 318200317 + ... + 318200320.

Almost surely, 2^1272801274 is an apocalyptic number.

1272801274 is a deficient number, since it is larger than the sum of its proper divisors (636400640).

1272801274 is an equidigital number, since it uses as much as digits as its factorization.

1272801274 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 636400639.

The product of its (nonzero) digits is 12544, while the sum is 34.

The square root of 1272801274 is about 35676.3405354305. The cubic root of 1272801274 is about 1083.7277658852.

Adding to 1272801274 its reverse (4721082721), we get a palindrome (5993883995).

The spelling of 1272801274 in words is "one billion, two hundred seventy-two million, eight hundred one thousand, two hundred seventy-four".