200120424 has 128 divisors (see below), whose sum is σ = 606320640. Its totient is φ = 53805312.

The previous prime is 200120419. The next prime is 200120429. The reversal of 200120424 is 424021002.

It is an interprime number because it is at equal distance from previous prime (200120419) and next prime (200120429).

It is not an unprimeable number, because it can be changed into a prime (200120429) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 258502 + ... + 259274.

It is an arithmetic number, because the mean of its divisors is an integer number (4736880).

Almost surely, 2^200120424 is an apocalyptic number.

200120424 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 200120424, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (303160320).

200120424 is an abundant number, since it is smaller than the sum of its proper divisors (406200216).

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

200120424 is a wasteful number, since it uses less digits than its factorization.

200120424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 879 (or 875 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 15.

The square root of 200120424 is about 14146.3926143735. The cubic root of 200120424 is about 584.9208980634.

Adding to 200120424 its reverse (424021002), we get a palindrome (624141426).

The spelling of 200120424 in words is "two hundred million, one hundred twenty thousand, four hundred twenty-four".