202542047 has 4 divisors (see below), whose sum is σ = 202579896. Its totient is φ = 202504200.

The previous prime is 202542037. The next prime is 202542059. The reversal of 202542047 is 740245202.

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

It is a cyclic number.

It is not a de Polignac number, because 202542047 - 2⁴ = 202542031 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (202542037) 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, 9248 + ... + 22149.

It is an arithmetic number, because the mean of its divisors is an integer number (50644974).

Almost surely, 2^202542047 is an apocalyptic number.

202542047 is a deficient number, since it is larger than the sum of its proper divisors (37849).

202542047 is an equidigital number, since it uses as much as digits as its factorization.

202542047 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37848.

The product of its (nonzero) digits is 4480, while the sum is 26.

The square root of 202542047 is about 14231.7267750614. The cubic root of 202542047 is about 587.2707874217.

Adding to 202542047 its reverse (740245202), we get a palindrome (942787249).

The spelling of 202542047 in words is "two hundred two million, five hundred forty-two thousand, forty-seven".