202420120 has 64 divisors (see below), whose sum is σ = 527155200. Its totient is φ = 68515200.

The previous prime is 202420073. The next prime is 202420123. The reversal of 202420120 is 21024202.

It is a self number, because there is not a number n which added to its sum of digits gives 202420120.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (202420123) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17545 + ... + 26695.

It is an arithmetic number, because the mean of its divisors is an integer number (8236800).

Almost surely, 2^202420120 is an apocalyptic number.

202420120 is a gapful number since it is divisible by the number (20) 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 202420120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (263577600).

202420120 is an abundant number, since it is smaller than the sum of its proper divisors (324735080).

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

202420120 is a wasteful number, since it uses less digits than its factorization.

202420120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9248 (or 9244 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 13.

The square root of 202420120 is about 14227.4424968088. The cubic root of 202420120 is about 587.1529212974.

Adding to 202420120 its reverse (21024202), we get a palindrome (223444322).

The spelling of 202420120 in words is "two hundred two million, four hundred twenty thousand, one hundred twenty".