43042400442 has 48 divisors (see below), whose sum is σ = 94820661000. Its totient is φ = 14107305600.

The previous prime is 43042400411. The next prime is 43042400447. The reversal of 43042400442 is 24400424034.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 6783004881 + 36259395561 = 82359^2 + 190419^2 .

It is not an unprimeable number, because it can be changed into a prime (43042400447) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4410184 + ... + 4419932.

Almost surely, 2^43042400442 is an apocalyptic number.

43042400442 is an abundant number, since it is smaller than the sum of its proper divisors (51778260558).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

43042400442 is a wasteful number, since it uses less digits than its factorization.

43042400442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13839 (or 13836 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 27.

Adding to 43042400442 its reverse (24400424034), we get a palindrome (67442824476).

The spelling of 43042400442 in words is "forty-three billion, forty-two million, four hundred thousand, four hundred forty-two".