42121323200 has 84 divisors (see below), whose sum is σ = 113067080952. Its totient is φ = 15316838400.

The previous prime is 42121323197. The next prime is 42121323203. The reversal of 42121323200 is 232312124.

It is an interprime number because it is at equal distance from previous prime (42121323197) and next prime (42121323203).

It is a Harshad number since it is a multiple of its sum of digits (20).

It is not an unprimeable number, because it can be changed into a prime (42121323203) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1179029 + ... + 1214228.

It is an arithmetic number, because the mean of its divisors is an integer number (1346036678).

Almost surely, 2^42121323200 is an apocalyptic number.

42121323200 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

42121323200 is an abundant number, since it is smaller than the sum of its proper divisors (70945757752).

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

42121323200 is a wasteful number, since it uses less digits than its factorization.

42121323200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2393290 (or 2393275 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 42121323200 its reverse (232312124), we get a palindrome (42353635324).

The spelling of 42121323200 in words is "forty-two billion, one hundred twenty-one million, three hundred twenty-three thousand, two hundred".