1442211723 has 10 divisors (see below), whose sum is σ = 2154415164. Its totient is φ = 961474428.

The previous prime is 1442211689. The next prime is 1442211737. The reversal of 1442211723 is 3271122441.

1442211723 is a `hidden beast` number, since 1 + 442 + 211 + 7 + 2 + 3 = 666.

It is not a de Polignac number, because 1442211723 - 2²⁰ = 1441163147 is a prime.

It is a super-4 number, since 4×1442211723⁴ (a number of 38 digits) contains 4444 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (1442211773) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 8902461 + ... + 8902622.

Almost surely, 2^1442211723 is an apocalyptic number.

1442211723 is a deficient number, since it is larger than the sum of its proper divisors (712203441).

1442211723 is an equidigital number, since it uses as much as digits as its factorization.

1442211723 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17805095 (or 17805086 counting only the distinct ones).

The product of its digits is 2688, while the sum is 27.

The square root of 1442211723 is about 37976.4627499719. The cubic root of 1442211723 is about 1129.8210808690.

The spelling of 1442211723 in words is "one billion, four hundred forty-two million, two hundred eleven thousand, seven hundred twenty-three".