140421021441021 has 6 divisors (see below), whose sum is σ = 202830364303710. Its totient is φ = 93614014294008.

The previous prime is 140421021440983. The next prime is 140421021441047. The reversal of 140421021441021 is 120144120124041.

140421021441021 is a `hidden beast` number, since 1 + 4 + 0 + 4 + 2 + 10 + 214 + 410 + 21 = 666.

It can be written as a sum of positive squares in only one way, i.e., 132961977675396 + 7459043765625 = 11530914^2 + 2731125^2 .

It is not a de Polignac number, because 140421021441021 - 2⁶ = 140421021440957 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140421021451021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 7801167857826 + ... + 7801167857843.

It is an arithmetic number, because the mean of its divisors is an integer number (33805060717285).

Almost surely, 2^{140421021441021} is an apocalyptic number.

It is an amenable number.

140421021441021 is a deficient number, since it is larger than the sum of its proper divisors (62409342862689).

140421021441021 is a wasteful number, since it uses less digits than its factorization.

140421021441021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15602335715675 (or 15602335715672 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 27.

Adding to 140421021441021 its reverse (120144120124041), we get a palindrome (260565141565062).

The spelling of 140421021441021 in words is "one hundred forty trillion, four hundred twenty-one billion, twenty-one million, four hundred forty-one thousand, twenty-one".