1110420021 has 8 divisors (see below), whose sum is σ = 1558484320. Its totient is φ = 701317872.

The previous prime is 1110420019. The next prime is 1110420029. The reversal of 1110420021 is 1200240111.

It is a happy number.

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

It is not a de Polignac number, because 1110420021 - 2¹ = 1110420019 is a prime.

It is a super-3 number, since 3×1110420021³ (a number of 28 digits) contains 333 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1110419979 and 1110420006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1110420029) 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, 9740470 + ... + 9740583.

It is an arithmetic number, because the mean of its divisors is an integer number (194810540).

Almost surely, 2^1110420021 is an apocalyptic number.

It is an amenable number.

1110420021 is a deficient number, since it is larger than the sum of its proper divisors (448064299).

1110420021 is a wasteful number, since it uses less digits than its factorization.

1110420021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19481075.

The product of its (nonzero) digits is 16, while the sum is 12.

The square root of 1110420021 is about 33322.9653692465. The cubic root of 1110420021 is about 1035.5293863492.

Adding to 1110420021 its reverse (1200240111), we get a palindrome (2310660132).

It can be divided in two parts, 11104 and 20021, that added together give a triangular number (31125 = T₂₄₉).

The spelling of 1110420021 in words is "one billion, one hundred ten million, four hundred twenty thousand, twenty-one".