140542240 has 96 divisors (see below), whose sum is σ = 354352320. Its totient is φ = 52521984.

The previous prime is 140542229. The next prime is 140542271. The reversal of 140542240 is 42245041.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 252042 + ... + 252598.

It is an arithmetic number, because the mean of its divisors is an integer number (3691170).

Almost surely, 2^140542240 is an apocalyptic number.

140542240 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 140542240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (177176160).

140542240 is an abundant number, since it is smaller than the sum of its proper divisors (213810080).

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

140542240 is a wasteful number, since it uses less digits than its factorization.

140542240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 674 (or 666 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 22.

The square root of 140542240 is about 11855.0512440900. The cubic root of 140542240 is about 519.9189222704.

Adding to 140542240 its reverse (42245041), we get a palindrome (182787281).

The spelling of 140542240 in words is "one hundred forty million, five hundred forty-two thousand, two hundred forty".