42544520431333 has 4 divisors (see below), whose sum is σ = 42815504638060. Its totient is φ = 42273536224608.

The previous prime is 42544520431307. The next prime is 42544520431367. The reversal of 42544520431333 is 33313402544524.

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 4473127710529 + 38071392720804 = 2114977^2 + 6170202^2 .

It is a cyclic number.

It is not a de Polignac number, because 42544520431333 - 2²¹ = 42544518334181 is a prime.

It is a super-2 number, since 2×42544520431333² (a number of 28 digits) contains 22 as substring.

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 42544520431333.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42544520431433) 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, 135492103128 + ... + 135492103441.

It is an arithmetic number, because the mean of its divisors is an integer number (10703876159515).

Almost surely, 2^{42544520431333} is an apocalyptic number.

It is an amenable number.

42544520431333 is a deficient number, since it is larger than the sum of its proper divisors (270984206727).

42544520431333 is a wasteful number, since it uses less digits than its factorization.

42544520431333 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 270984206726.

The product of its (nonzero) digits is 2073600, while the sum is 43.

Adding to 42544520431333 its reverse (33313402544524), we get a palindrome (75857922975857).

The spelling of 42544520431333 in words is "forty-two trillion, five hundred forty-four billion, five hundred twenty million, four hundred thirty-one thousand, three hundred thirty-three".