201504642 has 16 divisors (see below), whose sum is σ = 403976160. Its totient is φ = 67007072.

The previous prime is 201504631. The next prime is 201504649. The reversal of 201504642 is 246405102.

It is not an unprimeable number, because it can be changed into a prime (201504649) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 37563 + ... + 42590.

It is an arithmetic number, because the mean of its divisors is an integer number (25248510).

Almost surely, 2^201504642 is an apocalyptic number.

201504642 is an abundant number, since it is smaller than the sum of its proper divisors (202471518).

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

201504642 is a wasteful number, since it uses less digits than its factorization.

201504642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80577.

The product of its (nonzero) digits is 1920, while the sum is 24.

The square root of 201504642 is about 14195.2330731130. The cubic root of 201504642 is about 586.2664185569.

Adding to 201504642 its reverse (246405102), we get a palindrome (447909744).

The spelling of 201504642 in words is "two hundred one million, five hundred four thousand, six hundred forty-two".