202421423042 has 16 divisors (see below), whose sum is σ = 304080120960. Its totient is φ = 101061430272.

The previous prime is 202421422999. The next prime is 202421423069. The reversal of 202421423042 is 240324124202.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16393523 + ... + 16405865.

It is an arithmetic number, because the mean of its divisors is an integer number (19005007560).

Almost surely, 2^202421423042 is an apocalyptic number.

202421423042 is a deficient number, since it is larger than the sum of its proper divisors (101658697918).

202421423042 is a wasteful number, since it uses less digits than its factorization.

202421423042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23777.

The product of its (nonzero) digits is 6144, while the sum is 26.

Adding to 202421423042 its reverse (240324124202), we get a palindrome (442745547244).

The spelling of 202421423042 in words is "two hundred two billion, four hundred twenty-one million, four hundred twenty-three thousand, forty-two".