42523404543941 has 2 divisors, whose sum is σ = 42523404543942. Its totient is φ = 42523404543940.

The previous prime is 42523404543931. The next prime is 42523404544039. The reversal of 42523404543941 is 14934540432524.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 42162672171841 + 360732372100 = 6493279^2 + 600610^2 .

It is a cyclic number.

It is not a de Polignac number, because 42523404543941 - 2²⁶ = 42523337435077 is a prime.

It is a super-2 number, since 2×42523404543941² (a number of 28 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 42523404543941.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42523404543911) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21261702271970 + 21261702271971.

It is an arithmetic number, because the mean of its divisors is an integer number (21261702271971).

Almost surely, 2^{42523404543941} is an apocalyptic number.

It is an amenable number.

42523404543941 is a deficient number, since it is larger than the sum of its proper divisors (1).

42523404543941 is an equidigital number, since it uses as much as digits as its factorization.

42523404543941 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8294400, while the sum is 50.

The spelling of 42523404543941 in words is "forty-two trillion, five hundred twenty-three billion, four hundred four million, five hundred forty-three thousand, nine hundred forty-one".