140440545 has 48 divisors (see below), whose sum is σ = 279656832. Its totient is φ = 63866880.

The previous prime is 140440541. The next prime is 140440549. The reversal of 140440545 is 545044041.

It is an interprime number because it is at equal distance from previous prime (140440541) and next prime (140440549).

It is not a de Polignac number, because 140440545 - 2² = 140440541 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (140440541) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 65409 + ... + 67521.

It is an arithmetic number, because the mean of its divisors is an integer number (5826184).

Almost surely, 2^140440545 is an apocalyptic number.

140440545 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

140440545 is a deficient number, since it is larger than the sum of its proper divisors (139216287).

140440545 is a wasteful number, since it uses less digits than its factorization.

140440545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2342 (or 2339 counting only the distinct ones).

The product of its (nonzero) digits is 6400, while the sum is 27.

The square root of 140440545 is about 11850.7613679459. The cubic root of 140440545 is about 519.7934892505.

Adding to 140440545 its reverse (545044041), we get a palindrome (685484586).

The spelling of 140440545 in words is "one hundred forty million, four hundred forty thousand, five hundred forty-five".