505042142 has 48 divisors (see below), whose sum is σ = 897232896. Its totient is φ = 212427600.

The previous prime is 505042129. The next prime is 505042147. The reversal of 505042142 is 241240505.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (505042147) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 171083 + ... + 174009.

It is an arithmetic number, because the mean of its divisors is an integer number (18692352).

Almost surely, 2^505042142 is an apocalyptic number.

505042142 is a deficient number, since it is larger than the sum of its proper divisors (392190754).

505042142 is a wasteful number, since it uses less digits than its factorization.

505042142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3005 (or 2994 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 23.

The square root of 505042142 is about 22473.1426818770. The cubic root of 505042142 is about 796.3595748841.

Adding to 505042142 its reverse (241240505), we get a palindrome (746282647).

The spelling of 505042142 in words is "five hundred five million, forty-two thousand, one hundred forty-two".