42521423415 has 16 divisors (see below), whose sum is σ = 69149594976. Its totient is φ = 22306320000.

The previous prime is 42521423381. The next prime is 42521423429. The reversal of 42521423415 is 51432412524.

It is not a de Polignac number, because 42521423415 - 2¹⁵ = 42521390647 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23234836 + ... + 23236665.

It is an arithmetic number, because the mean of its divisors is an integer number (4321849686).

Almost surely, 2^42521423415 is an apocalyptic number.

42521423415 is a deficient number, since it is larger than the sum of its proper divisors (26628171561).

42521423415 is a wasteful number, since it uses less digits than its factorization.

42521423415 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46471570.

The product of its digits is 38400, while the sum is 33.

Adding to 42521423415 its reverse (51432412524), we get a palindrome (93953835939).

The spelling of 42521423415 in words is "forty-two billion, five hundred twenty-one million, four hundred twenty-three thousand, four hundred fifteen".