1406223442 has 16 divisors (see below), whose sum is σ = 2405215512. Its totient is φ = 610848000.

The previous prime is 1406223439. The next prime is 1406223449. The reversal of 1406223442 is 2443226041.

It can be written as a sum of positive squares in 4 ways, for example, as 1323431641 + 82791801 = 36379^2 + 9099^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1406223442.

It is not an unprimeable number, because it can be changed into a prime (1406223449) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1590309 + ... + 1591192.

Almost surely, 2^1406223442 is an apocalyptic number.

1406223442 is a deficient number, since it is larger than the sum of its proper divisors (998992070).

1406223442 is a wasteful number, since it uses less digits than its factorization.

1406223442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3181533.

The product of its (nonzero) digits is 9216, while the sum is 28.

The square root of 1406223442 is about 37499.6458916614. The cubic root of 1406223442 is about 1120.3441337269.

Adding to 1406223442 its reverse (2443226041), we get a palindrome (3849449483).

The spelling of 1406223442 in words is "one billion, four hundred six million, two hundred twenty-three thousand, four hundred forty-two".