146431140 has 48 divisors (see below), whose sum is σ = 410540928. Its totient is φ = 38997504.

The previous prime is 146431139. The next prime is 146431177. The reversal of 146431140 is 41134641.

It is a self number, because there is not a number n which added to its sum of digits gives 146431140.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 77244 + ... + 79116.

It is an arithmetic number, because the mean of its divisors is an integer number (8552936).

Almost surely, 2^146431140 is an apocalyptic number.

146431140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

146431140 is an abundant number, since it is smaller than the sum of its proper divisors (264109788).

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

146431140 is a wasteful number, since it uses less digits than its factorization.

146431140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3188 (or 3186 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 24.

The square root of 146431140 is about 12100.8735221884. The cubic root of 146431140 is about 527.0815501024.

Adding to 146431140 its reverse (41134641), we get a palindrome (187565781).

The spelling of 146431140 in words is "one hundred forty-six million, four hundred thirty-one thousand, one hundred forty".