1422381 has 4 divisors (see below), whose sum is σ = 1896512. Its totient is φ = 948252.

The previous prime is 1422367. The next prime is 1422409. The reversal of 1422381 is 1832241.

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 1422381 - 2¹⁴ = 1405997 is a prime.

It is a super-2 number, since 2×1422381² = 4046335418322, which contains 22 as substring.

It is a D-number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1423381) 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 3 ways as a sum of consecutive naturals, for example, 237061 + ... + 237066.

It is an arithmetic number, because the mean of its divisors is an integer number (474128).

2^1422381 is an apocalyptic number.

It is an amenable number.

1422381 is a deficient number, since it is larger than the sum of its proper divisors (474131).

1422381 is an equidigital number, since it uses as much as digits as its factorization.

1422381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 474130.

The product of its digits is 384, while the sum is 21.

The square root of 1422381 is about 1192.6361557491. The cubic root of 1422381 is about 112.4618735001.

The spelling of 1422381 in words is "one million, four hundred twenty-two thousand, three hundred eighty-one".