1134440021 has 16 divisors (see below), whose sum is σ = 1342380480. Its totient is φ = 945112320.

The previous prime is 1134439963. The next prime is 1134440053. The reversal of 1134440021 is 1200444311.

It is a cyclic number.

It is not a de Polignac number, because 1134440021 - 2¹⁰ = 1134438997 is a prime.

It is a super-2 number, since 2×1134440021² = 2573908322492960882, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1134439975 and 1134440002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1134440621) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8660 + ... + 48413.

It is an arithmetic number, because the mean of its divisors is an integer number (83898780).

Almost surely, 2^1134440021 is an apocalyptic number.

1134440021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1134440021 is a deficient number, since it is larger than the sum of its proper divisors (207940459).

1134440021 is a wasteful number, since it uses less digits than its factorization.

1134440021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57236.

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 1134440021 is about 33681.4492116952. The cubic root of 1134440021 is about 1042.9428547474.

Adding to 1134440021 its reverse (1200444311), we get a palindrome (2334884332).

The spelling of 1134440021 in words is "one billion, one hundred thirty-four million, four hundred forty thousand, twenty-one".