1423440442 has 16 divisors (see below), whose sum is σ = 2258958240. Its totient is φ = 670835088.

The previous prime is 1423440409. The next prime is 1423440463. The reversal of 1423440442 is 2440443241.

It is a self number, because there is not a number n which added to its sum of digits gives 1423440442.

It is an unprimeable number.

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, 87588 + ... + 102559.

It is an arithmetic number, because the mean of its divisors is an integer number (141184890).

Almost surely, 2^1423440442 is an apocalyptic number.

1423440442 is a deficient number, since it is larger than the sum of its proper divisors (835517798).

1423440442 is a wasteful number, since it uses less digits than its factorization.

1423440442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 190365.

The product of its (nonzero) digits is 12288, while the sum is 28.

The square root of 1423440442 is about 37728.5096710697. The cubic root of 1423440442 is about 1124.8978849207.

Adding to 1423440442 its reverse (2440443241), we get a palindrome (3863883683).

The spelling of 1423440442 in words is "one billion, four hundred twenty-three million, four hundred forty thousand, four hundred forty-two".