140221455 has 48 divisors (see below), whose sum is σ = 257402880. Its totient is φ = 65010880.

The previous prime is 140221447. The next prime is 140221489. The reversal of 140221455 is 554122041.

140221455 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 140221455 - 2³ = 140221447 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 40066 + ... + 43424.

It is an arithmetic number, because the mean of its divisors is an integer number (5362560).

Almost surely, 2^140221455 is an apocalyptic number.

140221455 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

140221455 is a deficient number, since it is larger than the sum of its proper divisors (117181425).

140221455 is a wasteful number, since it uses less digits than its factorization.

140221455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3412 (or 3401 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 24.

The square root of 140221455 is about 11841.5140501542. The cubic root of 140221455 is about 519.5230525659.

Adding to 140221455 its reverse (554122041), we get a palindrome (694343496).

The spelling of 140221455 in words is "one hundred forty million, two hundred twenty-one thousand, four hundred fifty-five".