1421898 has 8 divisors (see below), whose sum is σ = 2843808. Its totient is φ = 473964.

The previous prime is 1421867. The next prime is 1421909. The reversal of 1421898 is 8981241.

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

1421898 is an admirable number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 118486 + ... + 118497.

It is an arithmetic number, because the mean of its divisors is an integer number (355476).

2^1421898 is an apocalyptic number.

1421898 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1421898 is a wasteful number, since it uses less digits than its factorization.

1421898 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 236988.

The product of its digits is 4608, while the sum is 33.

The square root of 1421898 is about 1192.4336459527. The cubic root of 1421898 is about 112.4491424445.

It can be divided in two parts, 14 and 21898, that added together give a palindrome (21912).

The spelling of 1421898 in words is "one million, four hundred twenty-one thousand, eight hundred ninety-eight".