201042040 has 32 divisors (see below), whose sum is σ = 476154000. Its totient is φ = 76184064.

The previous prime is 201042013. The next prime is 201042113. The reversal of 201042040 is 40240102.

It is a self number, because there is not a number n which added to its sum of digits gives 201042040.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 131505 + ... + 133024.

Almost surely, 2^201042040 is an apocalyptic number.

201042040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

201042040 is an abundant number, since it is smaller than the sum of its proper divisors (275111960).

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

201042040 is a wasteful number, since it uses less digits than its factorization.

201042040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 264559 (or 264555 counting only the distinct ones).

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

The square root of 201042040 is about 14178.9294377255. The cubic root of 201042040 is about 585.8174366359.

Adding to 201042040 its reverse (40240102), we get a palindrome (241282142).

The spelling of 201042040 in words is "two hundred one million, forty-two thousand, forty".