1422401 has 4 divisors (see below), whose sum is σ = 1424832. Its totient is φ = 1419972.

The previous prime is 1422367. The next prime is 1422409. The reversal of 1422401 is 1042241.

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 a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1422401 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1422409) 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, 260 + ... + 1706.

It is an arithmetic number, because the mean of its divisors is an integer number (356208).

2^1422401 is an apocalyptic number.

It is an amenable number.

1422401 is a deficient number, since it is larger than the sum of its proper divisors (2431).

1422401 is an equidigital number, since it uses as much as digits as its factorization.

1422401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2430.

The product of its (nonzero) digits is 64, while the sum is 14.

The square root of 1422401 is about 1192.6445405065. The cubic root of 1422401 is about 112.4624006038.

Adding to 1422401 its reverse (1042241), we get a palindrome (2464642).

It can be divided in two parts, 142240 and 1, that added together give a palindrome (142241).

The spelling of 1422401 in words is "one million, four hundred twenty-two thousand, four hundred one".