201240140 has 24 divisors (see below), whose sum is σ = 427699440. Its totient is φ = 79525568.

The previous prime is 201240119. The next prime is 201240157. The reversal of 201240140 is 41042102.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 58955 + ... + 62274.

It is an arithmetic number, because the mean of its divisors is an integer number (17820810).

Almost surely, 2^201240140 is an apocalyptic number.

201240140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

201240140 is an abundant number, since it is smaller than the sum of its proper divisors (226459300).

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

201240140 is a wasteful number, since it uses less digits than its factorization.

201240140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121321 (or 121319 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 14.

The square root of 201240140 is about 14185.9134355176. The cubic root of 201240140 is about 586.0097883411.

Adding to 201240140 its reverse (41042102), we get a palindrome (242282242).

The spelling of 201240140 in words is "two hundred one million, two hundred forty thousand, one hundred forty".