1421424433140 has 96 divisors (see below), whose sum is σ = 4042278366336. Its totient is φ = 373146654720.

The previous prime is 1421424433109. The next prime is 1421424433141. The reversal of 1421424433140 is 413344241241.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1421424433141) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 891504 + ... + 1907256.

It is an arithmetic number, because the mean of its divisors is an integer number (42107066316).

Almost surely, 2^{1421424433140} is an apocalyptic number.

1421424433140 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 1421424433140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2021139183168).

1421424433140 is an abundant number, since it is smaller than the sum of its proper divisors (2620853933196).

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

1421424433140 is a wasteful number, since it uses less digits than its factorization.

1421424433140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1016129 (or 1016127 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 33.

Adding to 1421424433140 its reverse (413344241241), we get a palindrome (1834768674381).

The spelling of 1421424433140 in words is "one trillion, four hundred twenty-one billion, four hundred twenty-four million, four hundred thirty-three thousand, one hundred forty".