140135240 has 32 divisors (see below), whose sum is σ = 360348480. Its totient is φ = 48046272.

The previous prime is 140135231. The next prime is 140135249. The reversal of 140135240 is 42531041.

It is an interprime number because it is at equal distance from previous prime (140135231) and next prime (140135249).

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

It is not an unprimeable number, because it can be changed into a prime (140135249) 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 7 ways as a sum of consecutive naturals, for example, 249962 + ... + 250521.

It is an arithmetic number, because the mean of its divisors is an integer number (11260890).

Almost surely, 2^140135240 is an apocalyptic number.

140135240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

140135240 is an abundant number, since it is smaller than the sum of its proper divisors (220213240).

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

140135240 is a wasteful number, since it uses less digits than its factorization.

140135240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 500501 (or 500497 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 140135240 is about 11837.8731197796. The cubic root of 140135240 is about 519.4165546862.

Adding to 140135240 its reverse (42531041), we get a palindrome (182666281).

The spelling of 140135240 in words is "one hundred forty million, one hundred thirty-five thousand, two hundred forty".