43240021442 has 8 divisors (see below), whose sum is σ = 66368405136. Its totient is φ = 21117219732.

The previous prime is 43240021439. The next prime is 43240021463. The reversal of 43240021442 is 24412004234.

It is a happy number.

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, 251395388 + ... + 251395559.

It is an arithmetic number, because the mean of its divisors is an integer number (8296050642).

Almost surely, 2^43240021442 is an apocalyptic number.

43240021442 is a deficient number, since it is larger than the sum of its proper divisors (23128383694).

43240021442 is a wasteful number, since it uses less digits than its factorization.

43240021442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 502790992.

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

Adding to 43240021442 its reverse (24412004234), we get a palindrome (67652025676).

The spelling of 43240021442 in words is "forty-three billion, two hundred forty million, twenty-one thousand, four hundred forty-two".