42043433401 has 4 divisors (see below), whose sum is σ = 42228646992. Its totient is φ = 41858219812.

The previous prime is 42043433357. The next prime is 42043433413. The reversal of 42043433401 is 10433434024.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42043433401 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 42043433401.

It is not an unprimeable number, because it can be changed into a prime (42043434401) 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, 92606455 + ... + 92606908.

It is an arithmetic number, because the mean of its divisors is an integer number (10557161748).

Almost surely, 2^42043433401 is an apocalyptic number.

It is an amenable number.

42043433401 is a deficient number, since it is larger than the sum of its proper divisors (185213591).

42043433401 is a wasteful number, since it uses less digits than its factorization.

42043433401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 185213590.

The product of its (nonzero) digits is 13824, while the sum is 28.

Adding to 42043433401 its reverse (10433434024), we get a palindrome (52476867425).

The spelling of 42043433401 in words is "forty-two billion, forty-three million, four hundred thirty-three thousand, four hundred one".