1422180 has 36 divisors (see below), whose sum is σ = 4314492. Its totient is φ = 379200.

The previous prime is 1422163. The next prime is 1422191. The reversal of 1422180 is 812241.

It can be written as a sum of positive squares in 2 ways, for example, as 746496 + 675684 = 864^2 + 822^2 .

It is a tau number, because it is divible by the number of its divisors (36).

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

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 3771 + ... + 4130.

It is an arithmetic number, because the mean of its divisors is an integer number (119847).

2^1422180 is an apocalyptic number.

1422180 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1422180 is an abundant number, since it is smaller than the sum of its proper divisors (2892312).

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

1422180 is a wasteful number, since it uses less digits than its factorization.

1422180 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7916 (or 7911 counting only the distinct ones).

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

The square root of 1422180 is about 1192.5518856637. The cubic root of 1422180 is about 112.4565758333.

The spelling of 1422180 in words is "one million, four hundred twenty-two thousand, one hundred eighty".