42020363545 has 4 divisors (see below), whose sum is σ = 50424436260. Its totient is φ = 33616290832.

The previous prime is 42020363527. The next prime is 42020363573. The reversal of 42020363545 is 54536302024.

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 4646194569 + 37374168976 = 68163^2 + 193324^2 .

It is a cyclic number.

It is not a de Polignac number, because 42020363545 - 2²³ = 42011974937 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 42020363545.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4202036350 + ... + 4202036359.

It is an arithmetic number, because the mean of its divisors is an integer number (12606109065).

Almost surely, 2^42020363545 is an apocalyptic number.

It is an amenable number.

42020363545 is a deficient number, since it is larger than the sum of its proper divisors (8404072715).

42020363545 is an equidigital number, since it uses as much as digits as its factorization.

42020363545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8404072714.

The product of its (nonzero) digits is 86400, while the sum is 34.

Adding to 42020363545 its reverse (54536302024), we get a palindrome (96556665569).

The spelling of 42020363545 in words is "forty-two billion, twenty million, three hundred sixty-three thousand, five hundred forty-five".