140305512 has 32 divisors (see below), whose sum is σ = 351237600. Its totient is φ = 46705344.

The previous prime is 140305511. The next prime is 140305523. The reversal of 140305512 is 215503041.

It is not an unprimeable number, because it can be changed into a prime (140305511) 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, 16314 + ... + 23382.

It is an arithmetic number, because the mean of its divisors is an integer number (10976175).

Almost surely, 2^140305512 is an apocalyptic number.

140305512 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

140305512 is an abundant number, since it is smaller than the sum of its proper divisors (210932088).

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

140305512 is a wasteful number, since it uses less digits than its factorization.

140305512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7905 (or 7901 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 21.

The square root of 140305512 is about 11845.0627689346. The cubic root of 140305512 is about 519.6268427363.

Adding to 140305512 its reverse (215503041), we get a palindrome (355808553).

The spelling of 140305512 in words is "one hundred forty million, three hundred five thousand, five hundred twelve".