42521000450 has 48 divisors (see below), whose sum is σ = 83455194240. Its totient is φ = 16086069120.

The previous prime is 42521000437. The next prime is 42521000453. The reversal of 42521000450 is 5400012524.

It is a happy number.

42521000450 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is not an unprimeable number, because it can be changed into a prime (42521000453) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 105374 + ... + 310073.

It is an arithmetic number, because the mean of its divisors is an integer number (1738649880).

Almost surely, 2^42521000450 is an apocalyptic number.

42521000450 is a deficient number, since it is larger than the sum of its proper divisors (40934193790).

42521000450 is a wasteful number, since it uses less digits than its factorization.

42521000450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 415571 (or 415566 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 23.

Adding to 42521000450 its reverse (5400012524), we get a palindrome (47921012974).

The spelling of 42521000450 in words is "forty-two billion, five hundred twenty-one million, four hundred fifty", and thus it is an aban number.