140409045 has 56 divisors (see below), whose sum is σ = 288761856. Its totient is φ = 64175328.

The previous prime is 140409037. The next prime is 140409047. The reversal of 140409045 is 540904041.

It is not a de Polignac number, because 140409045 - 2³ = 140409037 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140409047) by changing a digit.

It is a polite number, since it can be written in 55 ways as a sum of consecutive naturals, for example, 22764 + ... + 28266.

Almost surely, 2^140409045 is an apocalyptic number.

140409045 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

140409045 is an abundant number, since it is smaller than the sum of its proper divisors (148352811).

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

140409045 is an frugal number, since it uses more digits than its factorization.

140409045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5533 (or 5518 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

The square root of 140409045 is about 11849.4322648809. The cubic root of 140409045 is about 519.7546241226.

The spelling of 140409045 in words is "one hundred forty million, four hundred nine thousand, forty-five".