1147220127 has 6 divisors (see below), whose sum is σ = 1657095752. Its totient is φ = 764813412.

The previous prime is 1147220117. The next prime is 1147220141. The reversal of 1147220127 is 7210227411.

It is a happy number.

It is not a de Polignac number, because 1147220127 - 2¹⁵ = 1147187359 is a prime.

It is a super-2 number, since 2×1147220127² = 2632228039587792258, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1147220127.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1147220117) 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 5 ways as a sum of consecutive naturals, for example, 63734443 + ... + 63734460.

Almost surely, 2^1147220127 is an apocalyptic number.

1147220127 is a deficient number, since it is larger than the sum of its proper divisors (509875625).

1147220127 is a wasteful number, since it uses less digits than its factorization.

1147220127 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 127468909 (or 127468906 counting only the distinct ones).

The product of its (nonzero) digits is 1568, while the sum is 27.

The square root of 1147220127 is about 33870.6381250782. The cubic root of 1147220127 is about 1046.8446854066.

Adding to 1147220127 its reverse (7210227411), we get a palindrome (8357447538).

The spelling of 1147220127 in words is "one billion, one hundred forty-seven million, two hundred twenty thousand, one hundred twenty-seven".