140324240 has 60 divisors (see below), whose sum is σ = 379530396. Its totient is φ = 48109824.

The previous prime is 140324227. The next prime is 140324257. The reversal of 140324240 is 42423041.

It can be written as a sum of positive squares in 2 ways, for example, as 27709696 + 112614544 = 5264^2 + 10612^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13979 + ... + 21818.

Almost surely, 2^140324240 is an apocalyptic number.

140324240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

140324240 is an abundant number, since it is smaller than the sum of its proper divisors (239206156).

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

140324240 is a wasteful number, since it uses less digits than its factorization.

140324240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35824 (or 35811 counting only the distinct ones).

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

The square root of 140324240 is about 11845.8532829003. The cubic root of 140324240 is about 519.6499616630.

Adding to 140324240 its reverse (42423041), we get a palindrome (182747281).

The spelling of 140324240 in words is "one hundred forty million, three hundred twenty-four thousand, two hundred forty".