1421414340 has 72 divisors (see below), whose sum is σ = 4010348160. Its totient is φ = 376171200.

The previous prime is 1421414303. The next prime is 1421414347. The reversal of 1421414340 is 434141241.

It is a self number, because there is not a number n which added to its sum of digits gives 1421414340.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1421414347) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1367541 + ... + 1368579.

It is an arithmetic number, because the mean of its divisors is an integer number (55699280).

Almost surely, 2^1421414340 is an apocalyptic number.

1421414340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1421414340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2005174080).

1421414340 is an abundant number, since it is smaller than the sum of its proper divisors (2588933820).

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

1421414340 is a wasteful number, since it uses less digits than its factorization.

1421414340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1353 (or 1200 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 24.

The square root of 1421414340 is about 37701.6490355528. The cubic root of 1421414340 is about 1124.3639110325.

Adding to 1421414340 its reverse (434141241), we get a palindrome (1855555581).

The spelling of 1421414340 in words is "one billion, four hundred twenty-one million, four hundred fourteen thousand, three hundred forty".