1422205440 has 80 divisors (see below), whose sum is σ = 4546637568. Its totient is φ = 379252736.

The previous prime is 1422205427. The next prime is 1422205441. The reversal of 1422205440 is 445022241.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 1422205440.

It is not an unprimeable number, because it can be changed into a prime (1422205441) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 84912 + ... + 100271.

Almost surely, 2^1422205440 is an apocalyptic number.

1422205440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1422205440 is an abundant number, since it is smaller than the sum of its proper divisors (3124432128).

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

1422205440 is an equidigital number, since it uses as much as digits as its factorization.

1422205440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 185209 (or 185193 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 24.

The square root of 1422205440 is about 37712.1391596923. The cubic root of 1422205440 is about 1124.5724637158.

Adding to 1422205440 its reverse (445022241), we get a palindrome (1867227681).

The spelling of 1422205440 in words is "one billion, four hundred twenty-two million, two hundred five thousand, four hundred forty".