140509044 has 36 divisors (see below), whose sum is σ = 382498116. Its totient is φ = 43233408.

The previous prime is 140509027. The next prime is 140509049. The reversal of 140509044 is 440905041.

It can be written as a sum of positive squares in 2 ways, for example, as 89529444 + 50979600 = 9462^2 + 7140^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a junction number, because it is equal to n+sod(n) for n = 140508999 and 140509017.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140509049) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 149649 + ... + 150584.

Almost surely, 2^140509044 is an apocalyptic number.

It is an amenable number.

140509044 is an abundant number, since it is smaller than the sum of its proper divisors (241989072).

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

140509044 is a wasteful number, since it uses less digits than its factorization.

140509044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 300256 (or 300251 counting only the distinct ones).

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

The square root of 140509044 is about 11853.6510831052. The cubic root of 140509044 is about 519.8779841923.

The spelling of 140509044 in words is "one hundred forty million, five hundred nine thousand, forty-four".