1440420441 has 8 divisors (see below), whose sum is σ = 1925711040. Its totient is φ = 957705072.

The previous prime is 1440420433. The next prime is 1440420469. The reversal of 1440420441 is 1440240441.

It is a happy number.

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

It is not a de Polignac number, because 1440420441 - 2³ = 1440420433 is a prime.

It is a super-2 number, since 2×1440420441² = 4149622093701268962, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1440420341) 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, 642501 + ... + 644738.

It is an arithmetic number, because the mean of its divisors is an integer number (240713880).

Almost surely, 2^1440420441 is an apocalyptic number.

It is an amenable number.

1440420441 is a deficient number, since it is larger than the sum of its proper divisors (485290599).

1440420441 is a wasteful number, since it uses less digits than its factorization.

1440420441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1287615.

The product of its (nonzero) digits is 2048, while the sum is 24.

The square root of 1440420441 is about 37952.8713143024. The cubic root of 1440420441 is about 1129.3531267764.

Adding to 1440420441 its reverse (1440240441), we get a palindrome (2880660882).

The spelling of 1440420441 in words is "one billion, four hundred forty million, four hundred twenty thousand, four hundred forty-one".