140242530 has 32 divisors (see below), whose sum is σ = 337075200. Its totient is φ = 37343232.

The previous prime is 140242517. The next prime is 140242541. The reversal of 140242530 is 35242041.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 140242497 and 140242506.

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, 20031 + ... + 26109.

It is an arithmetic number, because the mean of its divisors is an integer number (10533600).

Almost surely, 2^140242530 is an apocalyptic number.

140242530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

140242530 is an abundant number, since it is smaller than the sum of its proper divisors (196832670).

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

140242530 is a wasteful number, since it uses less digits than its factorization.

140242530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6858.

The product of its (nonzero) digits is 960, while the sum is 21.

The square root of 140242530 is about 11842.4038944802. The cubic root of 140242530 is about 519.5490790154.

Adding to 140242530 its reverse (35242041), we get a palindrome (175484571).

The spelling of 140242530 in words is "one hundred forty million, two hundred forty-two thousand, five hundred thirty".