202142522 has 8 divisors (see below), whose sum is σ = 303458400. Its totient is φ = 100989724.

The previous prime is 202142513. The next prime is 202142543. The reversal of 202142522 is 225241202.

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

It is a junction number, because it is equal to n+sod(n) for n = 202142494 and 202142503.

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 in 3 ways as a sum of consecutive naturals, for example, 37622 + ... + 42657.

It is an arithmetic number, because the mean of its divisors is an integer number (37932300).

Almost surely, 2^202142522 is an apocalyptic number.

202142522 is a deficient number, since it is larger than the sum of its proper divisors (101315878).

202142522 is a wasteful number, since it uses less digits than its factorization.

202142522 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81540.

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

The square root of 202142522 is about 14217.6834259312. The cubic root of 202142522 is about 586.8843922558.

Adding to 202142522 its reverse (225241202), we get a palindrome (427383724).

The spelling of 202142522 in words is "two hundred two million, one hundred forty-two thousand, five hundred twenty-two".