1442223111 has 32 divisors (see below), whose sum is σ = 2260553728. Its totient is φ = 800616960.

The previous prime is 1442223109. The next prime is 1442223127. The reversal of 1442223111 is 1113222441.

It is not a de Polignac number, because 1442223111 - 2¹ = 1442223109 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1442223151) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 769071 + ... + 770943.

It is an arithmetic number, because the mean of its divisors is an integer number (70642304).

Almost surely, 2^1442223111 is an apocalyptic number.

1442223111 is a deficient number, since it is larger than the sum of its proper divisors (818330617).

1442223111 is a wasteful number, since it uses less digits than its factorization.

1442223111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2911.

The product of its digits is 384, while the sum is 21.

The square root of 1442223111 is about 37976.6126846511. The cubic root of 1442223111 is about 1129.8240546276.

Adding to 1442223111 its reverse (1113222441), we get a palindrome (2555445552).

The spelling of 1442223111 in words is "one billion, four hundred forty-two million, two hundred twenty-three thousand, one hundred eleven".