1440020434 has 32 divisors (see below), whose sum is σ = 2226631680. Its totient is φ = 698227200.

The previous prime is 1440020419. The next prime is 1440020437. The reversal of 1440020434 is 4340200441.

It is a super-3 number, since 3×1440020434³ (a number of 28 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (1440020437) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4079202 + ... + 4079554.

It is an arithmetic number, because the mean of its divisors is an integer number (69582240).

Almost surely, 2^1440020434 is an apocalyptic number.

1440020434 is a deficient number, since it is larger than the sum of its proper divisors (786611246).

1440020434 is a wasteful number, since it uses less digits than its factorization.

1440020434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 786.

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

The square root of 1440020434 is about 37947.6011626559. The cubic root of 1440020434 is about 1129.2485760570.

Adding to 1440020434 its reverse (4340200441), we get a palindrome (5780220875).

The spelling of 1440020434 in words is "one billion, four hundred forty million, twenty thousand, four hundred thirty-four".