140421033434321 has 4 divisors (see below), whose sum is σ = 142723017589044. Its totient is φ = 138119049279600.

The previous prime is 140421033434303. The next prime is 140421033434323. The reversal of 140421033434321 is 123434330124041.

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 68001546153025 + 72419487281296 = 8246305^2 + 8509964^2 .

It is a cyclic number.

It is not a de Polignac number, because 140421033434321 - 2¹⁰ = 140421033433297 is a prime.

It is a super-2 number, since 2×140421033434321² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (140421033434323) 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, 1150992077270 + ... + 1150992077391.

It is an arithmetic number, because the mean of its divisors is an integer number (35680754397261).

Almost surely, 2^{140421033434321} is an apocalyptic number.

It is an amenable number.

140421033434321 is a deficient number, since it is larger than the sum of its proper divisors (2301984154723).

140421033434321 is an equidigital number, since it uses as much as digits as its factorization.

140421033434321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2301984154722.

The product of its (nonzero) digits is 82944, while the sum is 35.

Adding to 140421033434321 its reverse (123434330124041), we get a palindrome (263855363558362).

The spelling of 140421033434321 in words is "one hundred forty trillion, four hundred twenty-one billion, thirty-three million, four hundred thirty-four thousand, three hundred twenty-one".