140240445 has 8 divisors (see below), whose sum is σ = 224384736. Its totient is φ = 74794896.

The previous prime is 140240437. The next prime is 140240449. The reversal of 140240445 is 544042041.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 140240445 - 2³ = 140240437 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140240449) 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, 4674667 + ... + 4674696.

It is an arithmetic number, because the mean of its divisors is an integer number (28048092).

Almost surely, 2^140240445 is an apocalyptic number.

140240445 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

140240445 is a deficient number, since it is larger than the sum of its proper divisors (84144291).

140240445 is an equidigital number, since it uses as much as digits as its factorization.

140240445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9349371.

The product of its (nonzero) digits is 2560, while the sum is 24.

The square root of 140240445 is about 11842.3158630396. The cubic root of 140240445 is about 519.5465042729.

Adding to 140240445 its reverse (544042041), we get a palindrome (684282486).

The spelling of 140240445 in words is "one hundred forty million, two hundred forty thousand, four hundred forty-five".