1127921029 has 8 divisors (see below), whose sum is σ = 1171262232. Its totient is φ = 1085333760.

The previous prime is 1127921021. The next prime is 1127921057. The reversal of 1127921029 is 9201297211.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 17032129 + 1110888900 = 4127^2 + 33330^2 .

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 1127921029 - 2³ = 1127921021 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1127920985 and 1127921003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1127921021) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 185434 + ... + 191419.

It is an arithmetic number, because the mean of its divisors is an integer number (146407779).

Almost surely, 2^1127921029 is an apocalyptic number.

It is an amenable number.

1127921029 is a deficient number, since it is larger than the sum of its proper divisors (43341203).

1127921029 is an equidigital number, since it uses as much as digits as its factorization.

1127921029 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 376967.

The product of its (nonzero) digits is 4536, while the sum is 34.

The square root of 1127921029 is about 33584.5355632619. The cubic root of 1127921029 is about 1040.9412795315.

The spelling of 1127921029 in words is "one billion, one hundred twenty-seven million, nine hundred twenty-one thousand, twenty-nine".