140221356 has 48 divisors (see below), whose sum is σ = 357799680. Its totient is φ = 42387520.

The previous prime is 140221309. The next prime is 140221397. The reversal of 140221356 is 653122041.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 66145 + ... + 68231.

It is an arithmetic number, because the mean of its divisors is an integer number (7454160).

Almost surely, 2^140221356 is an apocalyptic number.

It is an amenable number.

140221356 is an abundant number, since it is smaller than the sum of its proper divisors (217578324).

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

140221356 is a wasteful number, since it uses less digits than its factorization.

140221356 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2614 (or 2612 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 24.

The square root of 140221356 is about 11841.5098699448. The cubic root of 140221356 is about 519.5229303003.

Adding to 140221356 its reverse (653122041), we get a palindrome (793343397).

The spelling of 140221356 in words is "one hundred forty million, two hundred twenty-one thousand, three hundred fifty-six".