202642543 has 8 divisors (see below), whose sum is σ = 213847920. Its totient is φ = 191491200.

The previous prime is 202642519. The next prime is 202642547. The reversal of 202642543 is 345246202.

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

It is a cyclic number.

It is not a de Polignac number, because 202642543 - 2⁵ = 202642511 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 (202642547) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5680 + ... + 20917.

It is an arithmetic number, because the mean of its divisors is an integer number (26730990).

Almost surely, 2^202642543 is an apocalyptic number.

202642543 is a deficient number, since it is larger than the sum of its proper divisors (11205377).

202642543 is a wasteful number, since it uses less digits than its factorization.

202642543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27017.

The product of its (nonzero) digits is 11520, while the sum is 28.

The square root of 202642543 is about 14235.2570401802. The cubic root of 202642543 is about 587.3679007660.

Adding to 202642543 its reverse (345246202), we get a palindrome (547888745).

The spelling of 202642543 in words is "two hundred two million, six hundred forty-two thousand, five hundred forty-three".