140534840 has 16 divisors (see below), whose sum is σ = 316203480. Its totient is φ = 56213920.

The previous prime is 140534833. The next prime is 140534857. The reversal of 140534840 is 48435041.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1756646 + ... + 1756725.

Almost surely, 2^140534840 is an apocalyptic number.

140534840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

140534840 is an abundant number, since it is smaller than the sum of its proper divisors (175668640).

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

140534840 is a wasteful number, since it uses less digits than its factorization.

140534840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3513382 (or 3513378 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 29.

The square root of 140534840 is about 11854.7391367335. The cubic root of 140534840 is about 519.9097969769.

Adding to 140534840 its reverse (48435041), we get a palindrome (188969881).

The spelling of 140534840 in words is "one hundred forty million, five hundred thirty-four thousand, eight hundred forty".