202140542 has 4 divisors (see below), whose sum is σ = 303210816. Its totient is φ = 101070270.

The previous prime is 202140511. The next prime is 202140581. The reversal of 202140542 is 245041202.

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 polite number, since it can be written as a sum of consecutive naturals, namely, 50535134 + ... + 50535137.

It is an arithmetic number, because the mean of its divisors is an integer number (75802704).

Almost surely, 2^202140542 is an apocalyptic number.

202140542 is a deficient number, since it is larger than the sum of its proper divisors (101070274).

202140542 is a wasteful number, since it uses less digits than its factorization.

202140542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101070273.

The product of its (nonzero) digits is 640, while the sum is 20.

The square root of 202140542 is about 14217.6137941639. The cubic root of 202140542 is about 586.8824760584.

Adding to 202140542 its reverse (245041202), we get a palindrome (447181744).

The spelling of 202140542 in words is "two hundred two million, one hundred forty thousand, five hundred forty-two".