140221000 has 32 divisors (see below), whose sum is σ = 328119480. Its totient is φ = 56088000.

The previous prime is 140220991. The next prime is 140221021. The reversal of 140221000 is 122041.

140221000 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 26030404 + 114190596 = 5102^2 + 10686^2 .

It is a Harshad number since it is a multiple of its sum of digits (10).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 69111 + ... + 71110.

Almost surely, 2^140221000 is an apocalyptic number.

140221000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

140221000 is an abundant number, since it is smaller than the sum of its proper divisors (187898480).

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

140221000 is a wasteful number, since it uses less digits than its factorization.

140221000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140242 (or 140228 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 10.

The square root of 140221000 is about 11841.4948380684. The cubic root of 140221000 is about 519.5224906376.

Adding to 140221000 its reverse (122041), we get a palindrome (140343041).

The spelling of 140221000 in words is "one hundred forty million, two hundred twenty-one thousand".