140221432 has 96 divisors (see below), whose sum is σ = 310292640. Its totient is φ = 58924800.

The previous prime is 140221397. The next prime is 140221439. The reversal of 140221432 is 234122041.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140221439) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2298682 + ... + 2298742.

It is an arithmetic number, because the mean of its divisors is an integer number (3232215).

Almost surely, 2^140221432 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 140221432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (155146320).

140221432 is an abundant number, since it is smaller than the sum of its proper divisors (170071208).

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

140221432 is a wasteful number, since it uses less digits than its factorization.

140221432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 165 (or 130 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 140221432 is about 11841.5130789946. The cubic root of 140221432 is about 519.5230241608.

Adding to 140221432 its reverse (234122041), we get a palindrome (374343473).

The spelling of 140221432 in words is "one hundred forty million, two hundred twenty-one thousand, four hundred thirty-two".