1272477085 has 8 divisors (see below), whose sum is σ = 1665788256. Its totient is φ = 925437840.

The previous prime is 1272477071. The next prime is 1272477121. The reversal of 1272477085 is 5807742721.

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

It is not a de Polignac number, because 1272477085 - 2⁷ = 1272476957 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11567919 + ... + 11568028.

It is an arithmetic number, because the mean of its divisors is an integer number (208223532).

Almost surely, 2^1272477085 is an apocalyptic number.

It is an amenable number.

1272477085 is a deficient number, since it is larger than the sum of its proper divisors (393311171).

1272477085 is a wasteful number, since it uses less digits than its factorization.

1272477085 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23135963.

The product of its (nonzero) digits is 219520, while the sum is 43.

The square root of 1272477085 is about 35671.7967728008. The cubic root of 1272477085 is about 1083.6357477357.

The spelling of 1272477085 in words is "one billion, two hundred seventy-two million, four hundred seventy-seven thousand, eighty-five".