1442122638 has 16 divisors (see below), whose sum is σ = 3146449536. Its totient is φ = 437006840.

The previous prime is 1442122607. The next prime is 1442122639. The reversal of 1442122638 is 8362212441.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a junction number, because it is equal to n+sod(n) for n = 1442122599 and 1442122608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1442122639) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10925106 + ... + 10925237.

It is an arithmetic number, because the mean of its divisors is an integer number (196653096).

Almost surely, 2^1442122638 is an apocalyptic number.

1442122638 is an abundant number, since it is smaller than the sum of its proper divisors (1704326898).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1442122638 is a wasteful number, since it uses less digits than its factorization.

1442122638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21850359.

The product of its digits is 18432, while the sum is 33.

The square root of 1442122638 is about 37975.2898343120. The cubic root of 1442122638 is about 1129.7978174831.

The spelling of 1442122638 in words is "one billion, four hundred forty-two million, one hundred twenty-two thousand, six hundred thirty-eight".