42531302545 has 4 divisors (see below), whose sum is σ = 51037563060. Its totient is φ = 34025042032.

The previous prime is 42531302521. The next prime is 42531302579. The reversal of 42531302545 is 54520313524.

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 31382476801 + 11148825744 = 177151^2 + 105588^2 .

It is a cyclic number.

It is not a de Polignac number, because 42531302545 - 2²¹ = 42529205393 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 42531302545.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4253130250 + ... + 4253130259.

It is an arithmetic number, because the mean of its divisors is an integer number (12759390765).

Almost surely, 2^42531302545 is an apocalyptic number.

It is an amenable number.

42531302545 is a deficient number, since it is larger than the sum of its proper divisors (8506260515).

42531302545 is an equidigital number, since it uses as much as digits as its factorization.

42531302545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8506260514.

The product of its (nonzero) digits is 72000, while the sum is 34.

The spelling of 42531302545 in words is "forty-two billion, five hundred thirty-one million, three hundred two thousand, five hundred forty-five".