1127518421 has 4 divisors (see below), whose sum is σ = 1193843052. Its totient is φ = 1061193792.

The previous prime is 1127518339. The next prime is 1127518429. The reversal of 1127518421 is 1248157211.

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

It can be written as a sum of positive squares in 2 ways, for example, as 760987396 + 366531025 = 27586^2 + 19145^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1127518421 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1127518429) 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, 33162290 + ... + 33162323.

It is an arithmetic number, because the mean of its divisors is an integer number (298460763).

Almost surely, 2^1127518421 is an apocalyptic number.

It is an amenable number.

1127518421 is a deficient number, since it is larger than the sum of its proper divisors (66324631).

1127518421 is an equidigital number, since it uses as much as digits as its factorization.

1127518421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66324630.

The product of its digits is 4480, while the sum is 32.

The square root of 1127518421 is about 33578.5410790880. The cubic root of 1127518421 is about 1040.8174111783.

The spelling of 1127518421 in words is "one billion, one hundred twenty-seven million, five hundred eighteen thousand, four hundred twenty-one".