201287542 has 8 divisors (see below), whose sum is σ = 302114736. Its totient is φ = 100582632.

The previous prime is 201287453. The next prime is 201287543. The reversal of 201287542 is 245782102.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201287543) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26338 + ... + 33109.

It is an arithmetic number, because the mean of its divisors is an integer number (37764342).

Almost surely, 2^201287542 is an apocalyptic number.

201287542 is a deficient number, since it is larger than the sum of its proper divisors (100827194).

201287542 is a wasteful number, since it uses less digits than its factorization.

201287542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61142.

The product of its (nonzero) digits is 8960, while the sum is 31.

The square root of 201287542 is about 14187.5840790460. The cubic root of 201287542 is about 586.0557961525.

The spelling of 201287542 in words is "two hundred one million, two hundred eighty-seven thousand, five hundred forty-two".