1422261 has 6 divisors (see below), whose sum is σ = 2054390. Its totient is φ = 948168.

The previous prime is 1422257. The next prime is 1422277. The reversal of 1422261 is 1622241.

It can be written as a sum of positive squares in only one way, i.e., 1368900 + 53361 = 1170^2 + 231^2 .

It is not a de Polignac number, because 1422261 - 2² = 1422257 is a prime.

It is a Duffinian number.

1422261 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1422221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 79006 + ... + 79023.

2^1422261 is an apocalyptic number.

It is an amenable number.

1422261 is a deficient number, since it is larger than the sum of its proper divisors (632129).

1422261 is a wasteful number, since it uses less digits than its factorization.

1422261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 158035 (or 158032 counting only the distinct ones).

The product of its digits is 192, while the sum is 18.

The square root of 1422261 is about 1192.5858459667. The cubic root of 1422261 is about 112.4587107740.

The spelling of 1422261 in words is "one million, four hundred twenty-two thousand, two hundred sixty-one".