202420042 has 16 divisors (see below), whose sum is σ = 331452000. Its totient is φ = 91948240.

The previous prime is 202420039. The next prime is 202420051. The reversal of 202420042 is 240024202.

It is a junction number, because it is equal to n+sod(n) for n = 202419998 and 202420025.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 59709 + ... + 63007.

It is an arithmetic number, because the mean of its divisors is an integer number (20715750).

Almost surely, 2^202420042 is an apocalyptic number.

202420042 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

202420042 is a deficient number, since it is larger than the sum of its proper divisors (129031958).

202420042 is a wasteful number, since it uses less digits than its factorization.

202420042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6101.

The product of its (nonzero) digits is 256, while the sum is 16.

The square root of 202420042 is about 14227.4397556272. The cubic root of 202420042 is about 587.1528458801.

Adding to 202420042 its reverse (240024202), we get a palindrome (442444244).

The spelling of 202420042 in words is "two hundred two million, four hundred twenty thousand, forty-two".