404523105242 has 4 divisors (see below), whose sum is σ = 606784657866. Its totient is φ = 202261552620.

The previous prime is 404523105221. The next prime is 404523105253. The reversal of 404523105242 is 242501325404.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 344699326321 + 59823778921 = 587111^2 + 244589^2 .

It is a junction number, because it is equal to n+sod(n) for n = 404523105199 and 404523105208.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101130776309 + ... + 101130776312.

Almost surely, 2^404523105242 is an apocalyptic number.

404523105242 is a deficient number, since it is larger than the sum of its proper divisors (202261552624).

404523105242 is a wasteful number, since it uses less digits than its factorization.

404523105242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 202261552623.

The product of its (nonzero) digits is 38400, while the sum is 32.

The spelling of 404523105242 in words is "four hundred four billion, five hundred twenty-three million, one hundred five thousand, two hundred forty-two".