505000140 has 24 divisors (see below), whose sum is σ = 1414000560. Its totient is φ = 134666688.

The previous prime is 505000123. The next prime is 505000141. The reversal of 505000140 is 41000505.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is not an unprimeable number, because it can be changed into a prime (505000141) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4208275 + ... + 4208394.

It is an arithmetic number, because the mean of its divisors is an integer number (58916690).

Almost surely, 2^505000140 is an apocalyptic number.

It is an amenable number.

505000140 is an abundant number, since it is smaller than the sum of its proper divisors (909000420).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

505000140 is a wasteful number, since it uses less digits than its factorization.

505000140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8416681 (or 8416679 counting only the distinct ones).

The product of its (nonzero) digits is 100, while the sum is 15.

The square root of 505000140 is about 22472.2081692031. The cubic root of 505000140 is about 796.3374977679.

Adding to 505000140 its reverse (41000505), we get a palindrome (546000645).

The spelling of 505000140 in words is "five hundred five million, one hundred forty", and thus it is an aban number.