42303062521 has 4 divisors (see below), whose sum is σ = 42424973712. Its totient is φ = 42181151332.

The previous prime is 42303062513. The next prime is 42303062539. The reversal of 42303062521 is 12526030324.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 42303062521 - 2³ = 42303062513 is a prime.

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 42303062521.

It is not an unprimeable number, because it can be changed into a prime (42303062561) 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, 60955075 + ... + 60955768.

It is an arithmetic number, because the mean of its divisors is an integer number (10606243428).

Almost surely, 2^42303062521 is an apocalyptic number.

It is an amenable number.

42303062521 is a deficient number, since it is larger than the sum of its proper divisors (121911191).

42303062521 is a wasteful number, since it uses less digits than its factorization.

42303062521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121911190.

The product of its (nonzero) digits is 8640, while the sum is 28.

Adding to 42303062521 its reverse (12526030324), we get a palindrome (54829092845).

The spelling of 42303062521 in words is "forty-two billion, three hundred three million, sixty-two thousand, five hundred twenty-one".