42521200 has 30 divisors (see below), whose sum is σ = 102158144. Its totient is φ = 17008320.

The previous prime is 42521191. The next prime is 42521203. The reversal of 42521200 is 212524.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42521203) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 52752 + ... + 53551.

Almost surely, 2^42521200 is an apocalyptic number.

42521200 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

42521200 is an abundant number, since it is smaller than the sum of its proper divisors (59636944).

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

42521200 is a wasteful number, since it uses less digits than its factorization.

42521200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106321 (or 106310 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 16.

The square root of 42521200 is about 6520.8281682621. The cubic root of 42521200 is about 349.0346186134.

Adding to 42521200 its reverse (212524), we get a palindrome (42733724).

The spelling of 42521200 in words is "forty-two million, five hundred twenty-one thousand, two hundred".