1273206151 has 12 divisors (see below), whose sum is σ = 1501940880. Its totient is φ = 1075945920.

The previous prime is 1273206119. The next prime is 1273206167. The reversal of 1273206151 is 1516023721.

It is a happy number.

It is not a de Polignac number, because 1273206151 - 2⁵ = 1273206119 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1273206751) 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 11 ways as a sum of consecutive naturals, for example, 179506 + ... + 186463.

It is an arithmetic number, because the mean of its divisors is an integer number (125161740).

Almost surely, 2^1273206151 is an apocalyptic number.

1273206151 is a deficient number, since it is larger than the sum of its proper divisors (228734729).

1273206151 is an equidigital number, since it uses as much as digits as its factorization.

1273206151 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 366054 (or 366047 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 28.

The square root of 1273206151 is about 35682.0143910066. The cubic root of 1273206151 is about 1083.8426646624.

Adding to 1273206151 its reverse (1516023721), we get a palindrome (2789229872).

The spelling of 1273206151 in words is "one billion, two hundred seventy-three million, two hundred six thousand, one hundred fifty-one".