202042454 has 4 divisors (see below), whose sum is σ = 303063684. Its totient is φ = 101021226.

The previous prime is 202042427. The next prime is 202042483. The reversal of 202042454 is 454240202.

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 pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50510612 + ... + 50510615.

It is an arithmetic number, because the mean of its divisors is an integer number (75765921).

Almost surely, 2^202042454 is an apocalyptic number.

202042454 is a deficient number, since it is larger than the sum of its proper divisors (101021230).

202042454 is a wasteful number, since it uses less digits than its factorization.

202042454 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101021229.

The product of its (nonzero) digits is 2560, while the sum is 23.

The square root of 202042454 is about 14214.1638515954. The cubic root of 202042454 is about 586.7875331349.

Adding to 202042454 its reverse (454240202), we get a palindrome (656282656).

The spelling of 202042454 in words is "two hundred two million, forty-two thousand, four hundred fifty-four".