4021432442 has 8 divisors (see below), whose sum is σ = 6131036532. Its totient is φ = 1977753600.

The previous prime is 4021432423. The next prime is 4021432469. The reversal of 4021432442 is 2442341204.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 3976689721 + 44742721 = 63061^2 + 6689^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16481159 + ... + 16481402.

Almost surely, 2^4021432442 is an apocalyptic number.

4021432442 is a deficient number, since it is larger than the sum of its proper divisors (2109604090).

4021432442 is a wasteful number, since it uses less digits than its factorization.

4021432442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32962624.

The product of its (nonzero) digits is 6144, while the sum is 26.

The square root of 4021432442 is about 63414.7651734200. The cubic root of 4021432442 is about 1590.2311600415.

Adding to 4021432442 its reverse (2442341204), we get a palindrome (6463773646).

The spelling of 4021432442 in words is "four billion, twenty-one million, four hundred thirty-two thousand, four hundred forty-two".