140242040 has 128 divisors (see below), whose sum is σ = 354585600. Its totient is φ = 49674240.

The previous prime is 140242033. The next prime is 140242087. The reversal of 140242040 is 40242041.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1241024 + ... + 1241136.

It is an arithmetic number, because the mean of its divisors is an integer number (2770200).

Almost surely, 2^140242040 is an apocalyptic number.

140242040 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 140242040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (177292800).

140242040 is an abundant number, since it is smaller than the sum of its proper divisors (214343560).

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

140242040 is a wasteful number, since it uses less digits than its factorization.

140242040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 237 (or 233 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 17.

The square root of 140242040 is about 11842.3832060950. The cubic root of 140242040 is about 519.5484739223.

Adding to 140242040 its reverse (40242041), we get a palindrome (180484081).

Subtracting from 140242040 its reverse (40242041), we obtain a palindrome (99999999).

The spelling of 140242040 in words is "one hundred forty million, two hundred forty-two thousand, forty".