1422131420 has 24 divisors (see below), whose sum is σ = 3028542048. Its totient is φ = 560840000.

The previous prime is 1422131401. The next prime is 1422131429. The reversal of 1422131420 is 241312241.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 1422131392 and 1422131401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1422131429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 499331 + ... + 502170.

It is an arithmetic number, because the mean of its divisors is an integer number (126189252).

Almost surely, 2^1422131420 is an apocalyptic number.

1422131420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1422131420 is an abundant number, since it is smaller than the sum of its proper divisors (1606410628).

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

1422131420 is a wasteful number, since it uses less digits than its factorization.

1422131420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1001581 (or 1001579 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 1422131420 is about 37711.1577653087. The cubic root of 1422131420 is about 1124.5529535720.

Adding to 1422131420 its reverse (241312241), we get a palindrome (1663443661).

The spelling of 1422131420 in words is "one billion, four hundred twenty-two million, one hundred thirty-one thousand, four hundred twenty".