1421118 has 16 divisors (see below), whose sum is σ = 3158160. Its totient is φ = 473688.
The previous prime is 1421113. The next prime is 1421141. The reversal of 1421118 is 8111241.
It is a Harshad number since it is a multiple of its sum of digits (18).
It is a Curzon number.
It is a self number, because there is not a number n which added to its sum of digits gives 1421118.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (1421113) 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, 13105 + ... + 13212.
It is an arithmetic number, because the mean of its divisors is an integer number (197385).
21421118 is an apocalyptic number.
1421118 is a gapful number since it is divisible by the number (18) formed by its first and last digit.
1421118 is an abundant number, since it is smaller than the sum of its proper divisors (1737042).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
1421118 is a wasteful number, since it uses less digits than its factorization.
1421118 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 26328 (or 26322 counting only the distinct ones).
The product of its digits is 64, while the sum is 18.
The square root of 1421118 is about 1192.1065388630. The cubic root of 1421118 is about 112.4285768873.
Adding to 1421118 its reverse (8111241), we get a palindrome (9532359).
The spelling of 1421118 in words is "one million, four hundred twenty-one thousand, one hundred eighteen".
• e-mail: info -at- numbersaplenty.com • Privacy notice • done in 0.065 sec. • engine limits •