1110721 has 8 divisors (see below), whose sum is σ = 1192320. Its totient is φ = 1031472.

The previous prime is 1110719. The next prime is 1110727. The reversal of 1110721 is 1270111.

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

It is not a de Polignac number, because 1110721 - 2¹ = 1110719 is a prime.

It is a super-2 number, since 2×1110721² = 2467402279682, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1110727) 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, 456 + ... + 1558.

It is an arithmetic number, because the mean of its divisors is an integer number (149040).

2^1110721 is an apocalyptic number.

It is an amenable number.

1110721 is a deficient number, since it is larger than the sum of its proper divisors (81599).

1110721 is a wasteful number, since it uses less digits than its factorization.

1110721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1175.

The product of its (nonzero) digits is 14, while the sum is 13.

The square root of 1110721 is about 1053.9074911965. The cubic root of 1110721 is about 103.5622937870.

Adding to 1110721 its reverse (1270111), we get a palindrome (2380832).

The spelling of 1110721 in words is "one million, one hundred ten thousand, seven hundred twenty-one".