201504542 has 4 divisors (see below), whose sum is σ = 302256816. Its totient is φ = 100752270.

The previous prime is 201504539. The next prime is 201504559. The reversal of 201504542 is 245405102.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50376134 + ... + 50376137.

It is an arithmetic number, because the mean of its divisors is an integer number (75564204).

Almost surely, 2^201504542 is an apocalyptic number.

201504542 is a deficient number, since it is larger than the sum of its proper divisors (100752274).

201504542 is a wasteful number, since it uses less digits than its factorization.

201504542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100752273.

The product of its (nonzero) digits is 1600, while the sum is 23.

The square root of 201504542 is about 14195.2295508033. The cubic root of 201504542 is about 586.2663215754.

Adding to 201504542 its reverse (245405102), we get a palindrome (446909644).

The spelling of 201504542 in words is "two hundred one million, five hundred four thousand, five hundred forty-two".