1422003440 has 80 divisors (see below), whose sum is σ = 3884188896. Its totient is φ = 477312000.

The previous prime is 1422003367. The next prime is 1422003461. The reversal of 1422003440 is 443002241.

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 (20).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 50711 + ... + 73590.

Almost surely, 2^1422003440 is an apocalyptic number.

1422003440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1422003440 is an abundant number, since it is smaller than the sum of its proper divisors (2462185456).

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

1422003440 is a wasteful number, since it uses less digits than its factorization.

1422003440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124338 (or 124332 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 20.

The square root of 1422003440 is about 37709.4608818530. The cubic root of 1422003440 is about 1124.5192190891.

Adding to 1422003440 its reverse (443002241), we get a palindrome (1865005681).

The spelling of 1422003440 in words is "one billion, four hundred twenty-two million, three thousand, four hundred forty".