202540542 has 8 divisors (see below), whose sum is σ = 405081096. Its totient is φ = 67513512.

The previous prime is 202540537. The next prime is 202540543. The reversal of 202540542 is 245045202.

It is a happy number.

202540542 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

202540542 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (202540543) 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, 16878373 + ... + 16878384.

It is an arithmetic number, because the mean of its divisors is an integer number (50635137).

Almost surely, 2^202540542 is an apocalyptic number.

202540542 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

202540542 is a wasteful number, since it uses less digits than its factorization.

202540542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33756762.

The product of its (nonzero) digits is 3200, while the sum is 24.

The square root of 202540542 is about 14231.6739001426. The cubic root of 202540542 is about 587.2693328353.

Adding to 202540542 its reverse (245045202), we get a palindrome (447585744).

The spelling of 202540542 in words is "two hundred two million, five hundred forty thousand, five hundred forty-two".