42043043401 has 4 divisors (see below), whose sum is σ = 42321474304. Its totient is φ = 41764612500.

The previous prime is 42043043387. The next prime is 42043043423. The reversal of 42043043401 is 10434034024.

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 not a de Polignac number, because 42043043401 - 2²³ = 42034654793 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42043043431) 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, 139215225 + ... + 139215526.

It is an arithmetic number, because the mean of its divisors is an integer number (10580368576).

Almost surely, 2^42043043401 is an apocalyptic number.

It is an amenable number.

42043043401 is a deficient number, since it is larger than the sum of its proper divisors (278430903).

42043043401 is a wasteful number, since it uses less digits than its factorization.

42043043401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 278430902.

The product of its (nonzero) digits is 4608, while the sum is 25.

Adding to 42043043401 its reverse (10434034024), we get a palindrome (52477077425).

The spelling of 42043043401 in words is "forty-two billion, forty-three million, forty-three thousand, four hundred one".