905140 has 24 divisors (see below), whose sum is σ = 1919232. Its totient is φ = 358560.

The previous prime is 905137. The next prime is 905143. The reversal of 905140 is 41509.

It is an interprime number because it is at equal distance from previous prime (905137) and next prime (905143).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (905143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3205 + ... + 3475.

It is an arithmetic number, because the mean of its divisors is an integer number (79968).

2⁹⁰⁵¹⁴⁰ is an apocalyptic number.

It is an amenable number.

905140 is an abundant number, since it is smaller than the sum of its proper divisors (1014092).

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

905140 is a wasteful number, since it uses less digits than its factorization.

905140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 447 (or 445 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 19.

The square root of 905140 is about 951.3884590429. The cubic root of 905140 is about 96.7323902364.

Adding to 905140 its reverse (41509), we get a palindrome (946649).

The spelling of 905140 in words is "nine hundred five thousand, one hundred forty".