1542321222 has 16 divisors (see below), whose sum is σ = 3321922800. Its totient is φ = 474560352.

The previous prime is 1542321199. The next prime is 1542321229. The reversal of 1542321222 is 2221232451.

It is a junction number, because it is equal to n+sod(n) for n = 1542321192 and 1542321201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1542321229) 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 7 ways as a sum of consecutive naturals, for example, 9886597 + ... + 9886752.

It is an arithmetic number, because the mean of its divisors is an integer number (207620175).

Almost surely, 2^1542321222 is an apocalyptic number.

1542321222 is an abundant number, since it is smaller than the sum of its proper divisors (1779601578).

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

1542321222 is a wasteful number, since it uses less digits than its factorization.

1542321222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19773367.

The product of its digits is 1920, while the sum is 24.

The square root of 1542321222 is about 39272.3977113698. The cubic root of 1542321222 is about 1155.3802642137.

Adding to 1542321222 its reverse (2221232451), we get a palindrome (3763553673).

The spelling of 1542321222 in words is "one billion, five hundred forty-two million, three hundred twenty-one thousand, two hundred twenty-two".