505645042 has 32 divisors (see below), whose sum is σ = 922250880. Its totient is φ = 202970880.

The previous prime is 505645027. The next prime is 505645067. The reversal of 505645042 is 240546505.

It is a junction number, because it is equal to n+sod(n) for n = 505644995 and 505645013.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 45184 + ... + 55252.

It is an arithmetic number, because the mean of its divisors is an integer number (28820340).

Almost surely, 2^505645042 is an apocalyptic number.

505645042 is a deficient number, since it is larger than the sum of its proper divisors (416605838).

505645042 is a wasteful number, since it uses less digits than its factorization.

505645042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10306.

The product of its (nonzero) digits is 24000, while the sum is 31.

The square root of 505645042 is about 22486.5524703099. The cubic root of 505645042 is about 796.6763367426.

The spelling of 505645042 in words is "five hundred five million, six hundred forty-five thousand, forty-two".