1420003444 has 24 divisors (see below), whose sum is σ = 2574603360. Its totient is φ = 684477024.

The previous prime is 1420003439. The next prime is 1420003447. The reversal of 1420003444 is 4443000241.

It is a super-2 number, since 2×1420003444² = 4032819561943722272, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1420003447) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 70267 + ... + 88189.

It is an arithmetic number, because the mean of its divisors is an integer number (107275140).

Almost surely, 2^1420003444 is an apocalyptic number.

It is an amenable number.

1420003444 is a deficient number, since it is larger than the sum of its proper divisors (1154599916).

1420003444 is a wasteful number, since it uses less digits than its factorization.

1420003444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18639 (or 18637 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 22.

The square root of 1420003444 is about 37682.9330599411. The cubic root of 1420003444 is about 1123.9917733047.

Adding to 1420003444 its reverse (4443000241), we get a palindrome (5863003685).

The spelling of 1420003444 in words is "one billion, four hundred twenty million, three thousand, four hundred forty-four".