140121230 has 16 divisors (see below), whose sum is σ = 252972720. Its totient is φ = 55880832.

The previous prime is 140121211. The next prime is 140121251. The reversal of 140121230 is 32121041.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

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, 17420 + ... + 24159.

It is an arithmetic number, because the mean of its divisors is an integer number (15810795).

Almost surely, 2^140121230 is an apocalyptic number.

140121230 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

140121230 is a deficient number, since it is larger than the sum of its proper divisors (112851490).

140121230 is a wasteful number, since it uses less digits than its factorization.

140121230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41923.

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 140121230 is about 11837.2813601773. The cubic root of 140121230 is about 519.3992445781.

Adding to 140121230 its reverse (32121041), we get a palindrome (172242271).

The spelling of 140121230 in words is "one hundred forty million, one hundred twenty-one thousand, two hundred thirty".