1422100 has 18 divisors (see below), whose sum is σ = 3086174. Its totient is φ = 568800.

The previous prime is 1422097. The next prime is 1422103. The reversal of 1422100 is 12241.

It is an interprime number because it is at equal distance from previous prime (1422097) and next prime (1422103).

It can be written as a sum of positive squares in 3 ways, for example, as 163216 + 1258884 = 404^2 + 1122^2 .

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1422103) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 7011 + ... + 7210.

2^1422100 is an apocalyptic number.

1422100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1422100 is an abundant number, since it is smaller than the sum of its proper divisors (1664074).

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

1422100 is a wasteful number, since it uses less digits than its factorization.

1422100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14235 (or 14228 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 10.

The square root of 1422100 is about 1192.5183436744. The cubic root of 1422100 is about 112.4544671704.

Adding to 1422100 its reverse (12241), we get a palindrome (1434341).

The spelling of 1422100 in words is "one million, four hundred twenty-two thousand, one hundred".