1117721044 has 18 divisors (see below), whose sum is σ = 2149997402. Its totient is φ = 508054800.

The previous prime is 1117721029. The next prime is 1117721047. The reversal of 1117721044 is 4401277111.

It can be written as a sum of positive squares in only one way, i.e., 1103568400 + 14152644 = 33220^2 + 3762^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1117721047) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1154187 + ... + 1155154.

Almost surely, 2^1117721044 is an apocalyptic number.

It is an amenable number.

1117721044 is a deficient number, since it is larger than the sum of its proper divisors (1032276358).

1117721044 is a wasteful number, since it uses less digits than its factorization.

1117721044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2309367 (or 2309354 counting only the distinct ones).

The product of its (nonzero) digits is 1568, while the sum is 28.

The square root of 1117721044 is about 33432.3353058084. The cubic root of 1117721044 is about 1037.7939691292.

Adding to 1117721044 its reverse (4401277111), we get a palindrome (5518998155).

The spelling of 1117721044 in words is "one billion, one hundred seventeen million, seven hundred twenty-one thousand, forty-four".