43031421442 has 8 divisors (see below), whose sum is σ = 64559688336. Its totient is φ = 21511525332.

The previous prime is 43031421437. The next prime is 43031421449. The reversal of 43031421442 is 24412413034.

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

It is a self number, because there is not a number n which added to its sum of digits gives 43031421442.

It is not an unprimeable number, because it can be changed into a prime (43031421449) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2079828 + ... + 2100415.

It is an arithmetic number, because the mean of its divisors is an integer number (8069961042).

Almost surely, 2^43031421442 is an apocalyptic number.

43031421442 is a deficient number, since it is larger than the sum of its proper divisors (21528266894).

43031421442 is a wasteful number, since it uses less digits than its factorization.

43031421442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4185392.

The product of its (nonzero) digits is 9216, while the sum is 28.

Adding to 43031421442 its reverse (24412413034), we get a palindrome (67443834476).

The spelling of 43031421442 in words is "forty-three billion, thirty-one million, four hundred twenty-one thousand, four hundred forty-two".