201012540 has 24 divisors (see below), whose sum is σ = 562835280. Its totient is φ = 53603328.

The previous prime is 201012499. The next prime is 201012547. The reversal of 201012540 is 45210102.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201012547) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1675045 + ... + 1675164.

It is an arithmetic number, because the mean of its divisors is an integer number (23451470).

Almost surely, 2^201012540 is an apocalyptic number.

201012540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

201012540 is an abundant number, since it is smaller than the sum of its proper divisors (361822740).

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

201012540 is a wasteful number, since it uses less digits than its factorization.

201012540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3350221 (or 3350219 counting only the distinct ones).

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

The square root of 201012540 is about 14177.8891235614. The cubic root of 201012540 is about 585.7887818336.

Adding to 201012540 its reverse (45210102), we get a palindrome (246222642).

The spelling of 201012540 in words is "two hundred one million, twelve thousand, five hundred forty".