1272040466 has 4 divisors (see below), whose sum is σ = 1908060702. Its totient is φ = 636020232.

The previous prime is 1272040463. The next prime is 1272040489. The reversal of 1272040466 is 6640402721.

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

It can be written as a sum of positive squares in only one way, i.e., 1265865241 + 6175225 = 35579^2 + 2485^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1272040463) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 318010115 + ... + 318010118.

Almost surely, 2^1272040466 is an apocalyptic number.

1272040466 is a deficient number, since it is larger than the sum of its proper divisors (636020236).

1272040466 is an equidigital number, since it uses as much as digits as its factorization.

1272040466 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 636020235.

The product of its (nonzero) digits is 16128, while the sum is 32.

The square root of 1272040466 is about 35665.6763008919. The cubic root of 1272040466 is about 1083.5117926334.

The spelling of 1272040466 in words is "one billion, two hundred seventy-two million, forty thousand, four hundred sixty-six".