42021450475 has 6 divisors (see below), whose sum is σ = 52106598620. Its totient is φ = 33617160360.

The previous prime is 42021450469. The next prime is 42021450479. The reversal of 42021450475 is 57405412024.

It is not a de Polignac number, because 42021450475 - 2⁹ = 42021449963 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 42021450475.

It is not an unprimeable number, because it can be changed into a prime (42021450479) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 840428985 + ... + 840429034.

Almost surely, 2^42021450475 is an apocalyptic number.

42021450475 is a deficient number, since it is larger than the sum of its proper divisors (10085148145).

42021450475 is a wasteful number, since it uses less digits than its factorization.

42021450475 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1680858029 (or 1680858024 counting only the distinct ones).

The product of its (nonzero) digits is 44800, while the sum is 34.

Adding to 42021450475 its reverse (57405412024), we get a palindrome (99426862499).

The spelling of 42021450475 in words is "forty-two billion, twenty-one million, four hundred fifty thousand, four hundred seventy-five".