140420232021321 has 128 divisors (see below), whose sum is σ = 252637944192000. Its totient is φ = 75249075105792.

The previous prime is 140420232021271. The next prime is 140420232021361. The reversal of 140420232021321 is 123120232024041.

140420232021321 is a `hidden beast` number, since 1 + 4 + 0 + 4 + 202 + 320 + 2 + 132 + 1 = 666.

It is not a de Polignac number, because 140420232021321 - 2¹⁰ = 140420232020297 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (140420232021361) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 2433217815 + ... + 2433275523.

It is an arithmetic number, because the mean of its divisors is an integer number (1973733939000).

Almost surely, 2^{140420232021321} is an apocalyptic number.

It is an amenable number.

140420232021321 is a deficient number, since it is larger than the sum of its proper divisors (112217712170679).

140420232021321 is a wasteful number, since it uses less digits than its factorization.

140420232021321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60448 (or 60442 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 27.

Adding to 140420232021321 its reverse (123120232024041), we get a palindrome (263540464045362).

The spelling of 140420232021321 in words is "one hundred forty trillion, four hundred twenty billion, two hundred thirty-two million, twenty-one thousand, three hundred twenty-one".