140544540 has 36 divisors (see below), whose sum is σ = 426318984. Its totient is φ = 37478496.

The previous prime is 140544517. The next prime is 140544557. The reversal of 140544540 is 45445041.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 390222 + ... + 390581.

It is an arithmetic number, because the mean of its divisors is an integer number (11842194).

Almost surely, 2^140544540 is an apocalyptic number.

140544540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

140544540 is an abundant number, since it is smaller than the sum of its proper divisors (285774444).

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

140544540 is a wasteful number, since it uses less digits than its factorization.

140544540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 780818 (or 780813 counting only the distinct ones).

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

The square root of 140544540 is about 11855.1482487567. The cubic root of 140544540 is about 519.9217584450.

Adding to 140544540 its reverse (45445041), we get a palindrome (185989581).

The spelling of 140544540 in words is "one hundred forty million, five hundred forty-four thousand, five hundred forty".