1127420557 has 4 divisors (see below), whose sum is σ = 1146529440. Its totient is φ = 1108311676.

The previous prime is 1127420543. The next prime is 1127420563. The reversal of 1127420557 is 7550247211.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1127420557 is a prime.

It is a super-2 number, since 2×1127420557² = 2542154224692380498, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1127420057) 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 3 ways as a sum of consecutive naturals, for example, 9554353 + ... + 9554470.

It is an arithmetic number, because the mean of its divisors is an integer number (286632360).

Almost surely, 2^1127420557 is an apocalyptic number.

It is an amenable number.

1127420557 is a deficient number, since it is larger than the sum of its proper divisors (19108883).

1127420557 is an equidigital number, since it uses as much as digits as its factorization.

1127420557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19108882.

The product of its (nonzero) digits is 19600, while the sum is 34.

The square root of 1127420557 is about 33577.0838072635. The cubic root of 1127420557 is about 1040.7872974051.

Adding to 1127420557 its reverse (7550247211), we get a palindrome (8677667768).

The spelling of 1127420557 in words is "one billion, one hundred twenty-seven million, four hundred twenty thousand, five hundred fifty-seven".