140121432 has 48 divisors (see below), whose sum is σ = 413997480. Its totient is φ = 42460800.

The previous prime is 140121427. The next prime is 140121439. The reversal of 140121432 is 234121041.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140121439) 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 11 ways as a sum of consecutive naturals, for example, 87669 + ... + 89252.

Almost surely, 2^140121432 is an apocalyptic number.

140121432 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

140121432 is an abundant number, since it is smaller than the sum of its proper divisors (273876048).

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

140121432 is a wasteful number, since it uses less digits than its factorization.

140121432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 176944 (or 176937 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 140121432 is about 11837.2898925387. The cubic root of 140121432 is about 519.3994941682.

Adding to 140121432 its reverse (234121041), we get a palindrome (374242473).

The spelling of 140121432 in words is "one hundred forty million, one hundred twenty-one thousand, four hundred thirty-two".