201240402 has 32 divisors (see below), whose sum is σ = 441889344. Its totient is φ = 60590400.

The previous prime is 201240401. The next prime is 201240421. The reversal of 201240402 is 204042102.

It is not an unprimeable number, because it can be changed into a prime (201240401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 652 + ... + 20072.

It is an arithmetic number, because the mean of its divisors is an integer number (13809042).

Almost surely, 2^201240402 is an apocalyptic number.

201240402 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

201240402 is an abundant number, since it is smaller than the sum of its proper divisors (240648942).

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

201240402 is a wasteful number, since it uses less digits than its factorization.

201240402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19594.

The product of its (nonzero) digits is 128, while the sum is 15.

The square root of 201240402 is about 14185.9226700275. The cubic root of 201240402 is about 586.0100426550.

Adding to 201240402 its reverse (204042102), we get a palindrome (405282504).

The spelling of 201240402 in words is "two hundred one million, two hundred forty thousand, four hundred two".