140345445 has 32 divisors (see below), whose sum is σ = 229878144. Its totient is φ = 73094400.

The previous prime is 140345423. The next prime is 140345461. The reversal of 140345445 is 544543041.

It is not a de Polignac number, because 140345445 - 2⁸ = 140345189 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 148675 + ... + 149615.

It is an arithmetic number, because the mean of its divisors is an integer number (7183692).

Almost surely, 2^140345445 is an apocalyptic number.

140345445 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

140345445 is a deficient number, since it is larger than the sum of its proper divisors (89532699).

140345445 is a wasteful number, since it uses less digits than its factorization.

140345445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1173.

The product of its (nonzero) digits is 19200, while the sum is 30.

The square root of 140345445 is about 11846.7482880325. The cubic root of 140345445 is about 519.6761358589.

Adding to 140345445 its reverse (544543041), we get a palindrome (684888486).

The spelling of 140345445 in words is "one hundred forty million, three hundred forty-five thousand, four hundred forty-five".