140406033121 has 4 divisors (see below), whose sum is σ = 145247620500. Its totient is φ = 135564445744.

The previous prime is 140406033083. The next prime is 140406033127. The reversal of 140406033121 is 121330604041.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 87178467600 + 53227565521 = 295260^2 + 230711^2 .

It is a cyclic number.

It is not a de Polignac number, because 140406033121 - 2²⁷ = 140271815393 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (140406033127) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2420793646 + ... + 2420793703.

It is an arithmetic number, because the mean of its divisors is an integer number (36311905125).

Almost surely, 2^140406033121 is an apocalyptic number.

It is an amenable number.

140406033121 is a deficient number, since it is larger than the sum of its proper divisors (4841587379).

140406033121 is an equidigital number, since it uses as much as digits as its factorization.

140406033121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4841587378.

The product of its (nonzero) digits is 1728, while the sum is 25.

Adding to 140406033121 its reverse (121330604041), we get a palindrome (261736637162).

The spelling of 140406033121 in words is "one hundred forty billion, four hundred six million, thirty-three thousand, one hundred twenty-one".