1421244420040 has 16 divisors (see below), whose sum is σ = 3197799945180. Its totient is φ = 568497768000.

The previous prime is 1421244419993. The next prime is 1421244420047. The reversal of 1421244420040 is 400244421241.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1218378855204 + 202865564836 = 1103802^2 + 450406^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1421244419990 and 1421244420008.

It is not an unprimeable number, because it can be changed into a prime (1421244420047) 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, 17765555211 + ... + 17765555290.

Almost surely, 2^{1421244420040} is an apocalyptic number.

1421244420040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1421244420040 is an abundant number, since it is smaller than the sum of its proper divisors (1776555525140).

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

1421244420040 is a wasteful number, since it uses less digits than its factorization.

1421244420040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35531110512 (or 35531110508 counting only the distinct ones).

The product of its (nonzero) digits is 8192, while the sum is 28.

Adding to 1421244420040 its reverse (400244421241), we get a palindrome (1821488841281).

The spelling of 1421244420040 in words is "one trillion, four hundred twenty-one billion, two hundred forty-four million, four hundred twenty thousand, forty".