4021440442 has 16 divisors (see below), whose sum is σ = 6123838464. Its totient is φ = 1980370000.

The previous prime is 4021440439. The next prime is 4021440463. The reversal of 4021440442 is 2440441204.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13534 + ... + 90697.

It is an arithmetic number, because the mean of its divisors is an integer number (382739904).

Almost surely, 2^4021440442 is an apocalyptic number.

4021440442 is a deficient number, since it is larger than the sum of its proper divisors (2102398022).

4021440442 is a wasteful number, since it uses less digits than its factorization.

4021440442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104525.

The product of its (nonzero) digits is 4096, while the sum is 25.

The square root of 4021440442 is about 63414.8282501814. The cubic root of 4021440442 is about 1590.2322145448.

Adding to 4021440442 its reverse (2440441204), we get a palindrome (6461881646).

It can be divided in two parts, 40214 and 40442, that added together give a square (80656 = 284²).

The spelling of 4021440442 in words is "four billion, twenty-one million, four hundred forty thousand, four hundred forty-two".