140121201 has 16 divisors (see below), whose sum is σ = 204069888. Its totient is φ = 84814800.

The previous prime is 140121167. The next prime is 140121203. The reversal of 140121201 is 102121041.

It is a happy number.

It is not a de Polignac number, because 140121201 - 2⁷ = 140121073 is a prime.

It is not an unprimeable number, because it can be changed into a prime (140121203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29716 + ... + 34106.

It is an arithmetic number, because the mean of its divisors is an integer number (12754368).

Almost surely, 2^140121201 is an apocalyptic number.

140121201 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

140121201 is a deficient number, since it is larger than the sum of its proper divisors (63948687).

140121201 is a wasteful number, since it uses less digits than its factorization.

140121201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5372.

The product of its (nonzero) digits is 16, while the sum is 12.

The square root of 140121201 is about 11837.2801352338. The cubic root of 140121201 is about 519.3992087459.

Adding to 140121201 its reverse (102121041), we get a palindrome (242242242).

The spelling of 140121201 in words is "one hundred forty million, one hundred twenty-one thousand, two hundred one".