1422112140 has 120 divisors (see below), whose sum is σ = 4481104320. Its totient is φ = 377540352.

The previous prime is 1422112127. The next prime is 1422112141. The reversal of 1422112140 is 412112241.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (1422112141) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 385344 + ... + 389016.

It is an arithmetic number, because the mean of its divisors is an integer number (37342536).

Almost surely, 2^1422112140 is an apocalyptic number.

1422112140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1422112140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2240552160).

1422112140 is an abundant number, since it is smaller than the sum of its proper divisors (3058992180).

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

1422112140 is a wasteful number, since it uses less digits than its factorization.

1422112140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3933 (or 3922 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

The square root of 1422112140 is about 37710.9021371804. The cubic root of 1422112140 is about 1124.5478716510.

Adding to 1422112140 its reverse (412112241), we get a palindrome (1834224381).

The spelling of 1422112140 in words is "one billion, four hundred twenty-two million, one hundred twelve thousand, one hundred forty".