140017540 has 24 divisors (see below), whose sum is σ = 316655640. Its totient is φ = 51698688.

The previous prime is 140017529. The next prime is 140017543. The reversal of 140017540 is 45710041.

It can be written as a sum of positive squares in 4 ways, for example, as 19501056 + 120516484 = 4416^2 + 10978^2 .

It is not an unprimeable number, because it can be changed into a prime (140017543) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 269005 + ... + 269524.

It is an arithmetic number, because the mean of its divisors is an integer number (13193985).

Almost surely, 2^140017540 is an apocalyptic number.

140017540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

140017540 is an abundant number, since it is smaller than the sum of its proper divisors (176638100).

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

140017540 is a wasteful number, since it uses less digits than its factorization.

140017540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 538551 (or 538549 counting only the distinct ones).

The product of its (nonzero) digits is 560, while the sum is 22.

The square root of 140017540 is about 11832.9007432666. The cubic root of 140017540 is about 519.2710941240.

Adding to 140017540 its reverse (45710041), we get a palindrome (185727581).

The spelling of 140017540 in words is "one hundred forty million, seventeen thousand, five hundred forty".