1272146461 has 8 divisors (see below), whose sum is σ = 1285372800. Its totient is φ = 1258983600.

The previous prime is 1272146459. The next prime is 1272146467. The reversal of 1272146461 is 1646412721.

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

It is a cyclic number.

It is not a de Polignac number, because 1272146461 - 2¹ = 1272146459 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 (1272146467) 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 7 ways as a sum of consecutive naturals, for example, 24960 + ... + 56278.

It is an arithmetic number, because the mean of its divisors is an integer number (160671600).

Almost surely, 2^1272146461 is an apocalyptic number.

It is an amenable number.

1272146461 is a deficient number, since it is larger than the sum of its proper divisors (13226339).

1272146461 is a wasteful number, since it uses less digits than its factorization.

1272146461 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31739.

The product of its digits is 16128, while the sum is 34.

The square root of 1272146461 is about 35667.1622224141. The cubic root of 1272146461 is about 1083.5418869702.

The spelling of 1272146461 in words is "one billion, two hundred seventy-two million, one hundred forty-six thousand, four hundred sixty-one".