1272235013 has 8 divisors (see below), whose sum is σ = 1474462080. Its totient is φ = 1075127760.

The previous prime is 1272234989. The next prime is 1272235031. The reversal of 1272235013 is 3105322721.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1272235013 - 2²⁰ = 1271186437 is a prime.

It is a super-2 number, since 2×1272235013² = 3237163856606220338, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1272235813) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1279418 + ... + 1280411.

It is an arithmetic number, because the mean of its divisors is an integer number (184307760).

Almost surely, 2^1272235013 is an apocalyptic number.

It is an amenable number.

1272235013 is a deficient number, since it is larger than the sum of its proper divisors (202227067).

1272235013 is an equidigital number, since it uses as much as digits as its factorization.

1272235013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2559907.

The product of its (nonzero) digits is 2520, while the sum is 26.

The square root of 1272235013 is about 35668.4035667424. The cubic root of 1272235013 is about 1083.5670275699.

Adding to 1272235013 its reverse (3105322721), we get a palindrome (4377557734).

The spelling of 1272235013 in words is "one billion, two hundred seventy-two million, two hundred thirty-five thousand, thirteen".