1422281 has 4 divisors (see below), whose sum is σ = 1625472. Its totient is φ = 1219092.

The previous prime is 1422277. The next prime is 1422287. The reversal of 1422281 is 1822241.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 1422281 - 2² = 1422277 is a prime.

It is a super-2 number, since 2×1422281² = 4045766485922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1422287) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 101585 + ... + 101598.

It is an arithmetic number, because the mean of its divisors is an integer number (406368).

2^1422281 is an apocalyptic number.

It is an amenable number.

1422281 is a deficient number, since it is larger than the sum of its proper divisors (203191).

1422281 is an equidigital number, since it uses as much as digits as its factorization.

1422281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 203190.

The product of its digits is 256, while the sum is 20.

The square root of 1422281 is about 1192.5942310778. The cubic root of 1422281 is about 112.4592379074.

The spelling of 1422281 in words is "one million, four hundred twenty-two thousand, two hundred eighty-one".