140452221 has 32 divisors (see below), whose sum is σ = 232357888. Its totient is φ = 73483200.

The previous prime is 140452211. The next prime is 140452223. The reversal of 140452221 is 122254041.

It is not a de Polignac number, because 140452221 - 2⁵ = 140452189 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140452223) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 32646 + ... + 36696.

It is an arithmetic number, because the mean of its divisors is an integer number (7261184).

Almost surely, 2^140452221 is an apocalyptic number.

It is an amenable number.

140452221 is a deficient number, since it is larger than the sum of its proper divisors (91905667).

140452221 is a wasteful number, since it uses less digits than its factorization.

140452221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4201.

The product of its (nonzero) digits is 640, while the sum is 21.

The square root of 140452221 is about 11851.2539842837. The cubic root of 140452221 is about 519.8078937816.

The spelling of 140452221 in words is "one hundred forty million, four hundred fifty-two thousand, two hundred twenty-one".