1421893 has 4 divisors (see below), whose sum is σ = 1551168. Its totient is φ = 1292620.

The previous prime is 1421867. The next prime is 1421909. The reversal of 1421893 is 3981241.

It is a happy number.

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-1421893 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1421813) 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, 64621 + ... + 64642.

It is an arithmetic number, because the mean of its divisors is an integer number (387792).

2^1421893 is an apocalyptic number.

It is an amenable number.

1421893 is a deficient number, since it is larger than the sum of its proper divisors (129275).

1421893 is a wasteful number, since it uses less digits than its factorization.

1421893 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129274.

The product of its digits is 1728, while the sum is 28.

The square root of 1421893 is about 1192.4315493981. The cubic root of 1421893 is about 112.4490106380.

The spelling of 1421893 in words is "one million, four hundred twenty-one thousand, eight hundred ninety-three".