1127421665 has 8 divisors (see below), whose sum is σ = 1381691520. Its totient is φ = 882746992.

The previous prime is 1127421653. The next prime is 1127421697. The reversal of 1127421665 is 5661247211.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1127421665 - 2¹⁰ = 1127420641 is a prime.

It is a super-2 number, since 2×1127421665² = 2542159221422744450, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2398535 + ... + 2399004.

It is an arithmetic number, because the mean of its divisors is an integer number (172711440).

Almost surely, 2^1127421665 is an apocalyptic number.

It is an amenable number.

1127421665 is a deficient number, since it is larger than the sum of its proper divisors (254269855).

1127421665 is an equidigital number, since it uses as much as digits as its factorization.

1127421665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4797591.

The product of its digits is 20160, while the sum is 35.

The square root of 1127421665 is about 33577.1003066078. The cubic root of 1127421665 is about 1040.7876383580.

Adding to 1127421665 its reverse (5661247211), we get a palindrome (6788668876).

The spelling of 1127421665 in words is "one billion, one hundred twenty-seven million, four hundred twenty-one thousand, six hundred sixty-five".