1421438 has 16 divisors (see below), whose sum is σ = 2286144. Its totient is φ = 660480.

The previous prime is 1421437. The next prime is 1421449. The reversal of 1421438 is 8341241.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1421437) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3083 + ... + 3513.

It is an arithmetic number, because the mean of its divisors is an integer number (142884).

2^1421438 is an apocalyptic number.

1421438 is a deficient number, since it is larger than the sum of its proper divisors (864706).

1421438 is a wasteful number, since it uses less digits than its factorization.

1421438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 547.

The product of its digits is 768, while the sum is 23.

The square root of 1421438 is about 1192.2407475003. The cubic root of 1421438 is about 112.4370149491.

Adding to 1421438 its reverse (8341241), we get a palindrome (9762679).

The spelling of 1421438 in words is "one million, four hundred twenty-one thousand, four hundred thirty-eight".