202105140 has 96 divisors (see below), whose sum is σ = 595365120. Its totient is φ = 51127296.

The previous prime is 202105093. The next prime is 202105159. The reversal of 202105140 is 41501202.

It is a super-2 number, since 2×202105140² = 81692975228839200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 188526 + ... + 189594.

It is an arithmetic number, because the mean of its divisors is an integer number (6201720).

Almost surely, 2^202105140 is an apocalyptic number.

202105140 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 202105140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (297682560).

202105140 is an abundant number, since it is smaller than the sum of its proper divisors (393259980).

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

202105140 is a wasteful number, since it uses less digits than its factorization.

202105140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1241 (or 1239 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 15.

The square root of 202105140 is about 14216.3687346664. The cubic root of 202105140 is about 586.8482127248.

Adding to 202105140 its reverse (41501202), we get a palindrome (243606342).

The spelling of 202105140 in words is "two hundred two million, one hundred five thousand, one hundred forty".