1422861 has 8 divisors (see below), whose sum is σ = 2069664. Its totient is φ = 862320.

The previous prime is 1422857. The next prime is 1422877. The reversal of 1422861 is 1682241.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1422861 - 2² = 1422857 is a prime.

It is a Curzon number.

1422861 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1422821) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 21526 + ... + 21591.

It is an arithmetic number, because the mean of its divisors is an integer number (258708).

2^1422861 is an apocalyptic number.

1422861 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1422861 is a deficient number, since it is larger than the sum of its proper divisors (646803).

1422861 is a wasteful number, since it uses less digits than its factorization.

1422861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43131.

The product of its digits is 768, while the sum is 24.

The square root of 1422861 is about 1192.8373736600. The cubic root of 1422861 is about 112.4745226257.

It can be divided in two parts, 142 and 2861, that added together give a palindrome (3003).

The spelling of 1422861 in words is "one million, four hundred twenty-two thousand, eight hundred sixty-one".