42405133777001 has 4 divisors (see below), whose sum is σ = 43205230640772. Its totient is φ = 41605036913232.

The previous prime is 42405133776991. The next prime is 42405133777057. The reversal of 42405133777001 is 10077733150424.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 16359921667600 + 26045212109401 = 4044740^2 + 5103451^2 .

It is a cyclic number.

It is not a de Polignac number, because 42405133777001 - 2³⁸ = 42130255870057 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42405133777091) 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, 400048431806 + ... + 400048431911.

It is an arithmetic number, because the mean of its divisors is an integer number (10801307660193).

Almost surely, 2^{42405133777001} is an apocalyptic number.

It is an amenable number.

42405133777001 is a deficient number, since it is larger than the sum of its proper divisors (800096863771).

42405133777001 is an equidigital number, since it uses as much as digits as its factorization.

42405133777001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 800096863770.

The product of its (nonzero) digits is 493920, while the sum is 44.

The spelling of 42405133777001 in words is "forty-two trillion, four hundred five billion, one hundred thirty-three million, seven hundred seventy-seven thousand, one".