140506740 has 144 divisors (see below), whose sum is σ = 481178880. Its totient is φ = 32874240.

The previous prime is 140506739. The next prime is 140506759. The reversal of 140506740 is 47605041.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 56197 + ... + 58643.

It is an arithmetic number, because the mean of its divisors is an integer number (3341520).

Almost surely, 2^140506740 is an apocalyptic number.

140506740 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 140506740, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (240589440).

140506740 is an abundant number, since it is smaller than the sum of its proper divisors (340672140).

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

140506740 is a wasteful number, since it uses less digits than its factorization.

140506740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2502 (or 2497 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 27.

The square root of 140506740 is about 11853.5538974605. The cubic root of 140506740 is about 519.8751426067.

It can be divided in two parts, 140506 and 740, that added together give a triangular number (141246 = T₅₃₁).

The spelling of 140506740 in words is "one hundred forty million, five hundred six thousand, seven hundred forty".