140212345 has 32 divisors (see below), whose sum is σ = 219276288. Its totient is φ = 83524608.

The previous prime is 140212339. The next prime is 140212363. The reversal of 140212345 is 543212041.

It is a cyclic number.

It is not a de Polignac number, because 140212345 - 2³ = 140212337 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1329 + ... + 16798.

It is an arithmetic number, because the mean of its divisors is an integer number (6852384).

Almost surely, 2^140212345 is an apocalyptic number.

It is an amenable number.

140212345 is a deficient number, since it is larger than the sum of its proper divisors (79063943).

140212345 is a wasteful number, since it uses less digits than its factorization.

140212345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18169.

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 140212345 is about 11841.1293802576. The cubic root of 140212345 is about 519.5118014168.

Adding to 140212345 its reverse (543212041), we get a palindrome (683424386).

The spelling of 140212345 in words is "one hundred forty million, two hundred twelve thousand, three hundred forty-five".