42521240454 has 32 divisors (see below), whose sum is σ = 106026990336. Its totient is φ = 11044477920.

The previous prime is 42521240387. The next prime is 42521240471. The reversal of 42521240454 is 45404212524.

It is a super-2 number, since 2×42521240454² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 46018197 + ... + 46019120.

It is an arithmetic number, because the mean of its divisors is an integer number (3313343448).

Almost surely, 2^42521240454 is an apocalyptic number.

42521240454 is an abundant number, since it is smaller than the sum of its proper divisors (63505749882).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

42521240454 is a wasteful number, since it uses less digits than its factorization.

42521240454 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92037340.

The product of its (nonzero) digits is 51200, while the sum is 33.

Adding to 42521240454 its reverse (45404212524), we get a palindrome (87925452978).

The spelling of 42521240454 in words is "forty-two billion, five hundred twenty-one million, two hundred forty thousand, four hundred fifty-four".