140221402 has 16 divisors (see below), whose sum is σ = 212307840. Its totient is φ = 69455232.

The previous prime is 140221397. The next prime is 140221439. The reversal of 140221402 is 204122041.

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, 150474 + ... + 151402.

It is an arithmetic number, because the mean of its divisors is an integer number (13269240).

Almost surely, 2^140221402 is an apocalyptic number.

140221402 is a deficient number, since it is larger than the sum of its proper divisors (72086438).

140221402 is a wasteful number, since it uses less digits than its factorization.

140221402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1557.

The product of its (nonzero) digits is 128, while the sum is 16.

The square root of 140221402 is about 11841.5118122645. The cubic root of 140221402 is about 519.5229871106.

Adding to 140221402 its reverse (204122041), we get a palindrome (344343443).

The spelling of 140221402 in words is "one hundred forty million, two hundred twenty-one thousand, four hundred two".