201244540 has 24 divisors (see below), whose sum is σ = 482987232. Its totient is φ = 68998080.

The previous prime is 201244507. The next prime is 201244559. The reversal of 201244540 is 45442102.

It is a happy number.

It is a congruent number.

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, 718591 + ... + 718870.

It is an arithmetic number, because the mean of its divisors is an integer number (20124468).

Almost surely, 2^201244540 is an apocalyptic number.

201244540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

201244540 is an abundant number, since it is smaller than the sum of its proper divisors (281742692).

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

201244540 is a wasteful number, since it uses less digits than its factorization.

201244540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1437477 (or 1437475 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 22.

The square root of 201244540 is about 14186.0685180920. The cubic root of 201244540 is about 586.0140592324.

Adding to 201244540 its reverse (45442102), we get a palindrome (246686642).

The spelling of 201244540 in words is "two hundred one million, two hundred forty-four thousand, five hundred forty".