140221401 has 16 divisors (see below), whose sum is σ = 193794048. Its totient is φ = 90090000.

The previous prime is 140221397. The next prime is 140221439. The reversal of 140221401 is 104122041.

It is not a de Polignac number, because 140221401 - 2² = 140221397 is a prime.

It is not an unprimeable number, because it can be changed into a prime (140221441) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20340 + ... + 26346.

It is an arithmetic number, because the mean of its divisors is an integer number (12112128).

Almost surely, 2^140221401 is an apocalyptic number.

It is an amenable number.

140221401 is a deficient number, since it is larger than the sum of its proper divisors (53572647).

140221401 is a wasteful number, since it uses less digits than its factorization.

140221401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6292.

The product of its (nonzero) digits is 64, while the sum is 15.

The square root of 140221401 is about 11841.5117700402. The cubic root of 140221401 is about 519.5229858756.

Adding to 140221401 its reverse (104122041), we get a palindrome (244343442).

The spelling of 140221401 in words is "one hundred forty million, two hundred twenty-one thousand, four hundred one".