140234240 has 40 divisors (see below), whose sum is σ = 336239640. Its totient is φ = 56092672.

The previous prime is 140234221. The next prime is 140234249. The reversal of 140234240 is 42432041.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140234249) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24830 + ... + 29949.

It is an arithmetic number, because the mean of its divisors is an integer number (8405991).

Almost surely, 2^140234240 is an apocalyptic number.

140234240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

140234240 is an abundant number, since it is smaller than the sum of its proper divisors (196005400).

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

140234240 is an frugal number, since it uses more digits than its factorization.

140234240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54802 (or 54786 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 20.

The square root of 140234240 is about 11842.0538759119. The cubic root of 140234240 is about 519.5388416389.

Adding to 140234240 its reverse (42432041), we get a palindrome (182666281).

The spelling of 140234240 in words is "one hundred forty million, two hundred thirty-four thousand, two hundred forty".