1219127056 has 135 divisors (see below), whose sum is σ = 2913434901. Its totient is φ = 492734592.

The previous prime is 1219127051. The next prime is 1219127059. The reversal of 1219127056 is 6507219121.

The square root of 1219127056 is 34916.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 639280656 + 579846400 = 25284^2 + 24080^2 .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1219127051) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 28351771 + ... + 28351813.

Almost surely, 2^1219127056 is an apocalyptic number.

1219127056 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

1219127056 is the 34916-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1219127056

1219127056 is an abundant number, since it is smaller than the sum of its proper divisors (1694307845).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1219127056 is an equidigital number, since it uses as much as digits as its factorization.

1219127056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 166 (or 81 counting only the distinct ones).

The product of its (nonzero) digits is 7560, while the sum is 34.

The cubic root of 1219127056 is about 1068.2748150727.

The spelling of 1219127056 in words is "one billion, two hundred nineteen million, one hundred twenty-seven thousand, fifty-six".