42521214400 has 84 divisors (see below), whose sum is σ = 119575760848. Its totient is φ = 14578698240.

The previous prime is 42521214347. The next prime is 42521214443. The reversal of 42521214400 is 441212524.

It is a Harshad number since it is a multiple of its sum of digits (25).

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 11 ways as a sum of consecutive naturals, for example, 1887069 + ... + 1909468.

Almost surely, 2^42521214400 is an apocalyptic number.

42521214400 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

42521214400 is an abundant number, since it is smaller than the sum of its proper divisors (77054546448).

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

42521214400 is a wasteful number, since it uses less digits than its factorization.

42521214400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3796566 (or 3796551 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 25.

Adding to 42521214400 its reverse (441212524), we get a palindrome (42962426924).

The spelling of 42521214400 in words is "forty-two billion, five hundred twenty-one million, two hundred fourteen thousand, four hundred".