1423022440 has 64 divisors (see below), whose sum is σ = 3728280960. Its totient is φ = 478682880.

The previous prime is 1423022413. The next prime is 1423022441. The reversal of 1423022440 is 442203241.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (1423022441) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 33106 + ... + 62785.

It is an arithmetic number, because the mean of its divisors is an integer number (58254390).

Almost surely, 2^1423022440 is an apocalyptic number.

1423022440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1423022440 is an abundant number, since it is smaller than the sum of its proper divisors (2305258520).

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

1423022440 is a wasteful number, since it uses less digits than its factorization.

1423022440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95962 (or 95958 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 22.

The square root of 1423022440 is about 37722.9696604072. The cubic root of 1423022440 is about 1124.7877630905.

Adding to 1423022440 its reverse (442203241), we get a palindrome (1865225681).

The spelling of 1423022440 in words is "one billion, four hundred twenty-three million, twenty-two thousand, four hundred forty".