140440123100421 has 24 divisors (see below), whose sum is σ = 205628035874040. Its totient is φ = 92355142320000.

The previous prime is 140440123100401. The next prime is 140440123100467. The reversal of 140440123100421 is 124001321044041.

140440123100421 is a `hidden beast` number, since 1 + 4 + 0 + 4 + 4 + 0 + 1 + 231 + 0 + 0 + 421 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 34033677477921 + 106406445622500 = 5833839^2 + 10315350^2 .

It is not a de Polignac number, because 140440123100421 - 2⁴⁶ = 70071378922757 is a prime.

It is a super-2 number, since 2×140440123100421² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140440123100401) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 286929430 + ... + 287418471.

It is an arithmetic number, because the mean of its divisors is an integer number (8567834828085).

Almost surely, 2^{140440123100421} is an apocalyptic number.

It is an amenable number.

140440123100421 is a deficient number, since it is larger than the sum of its proper divisors (65187912773619).

140440123100421 is a wasteful number, since it uses less digits than its factorization.

140440123100421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 574348277 (or 574348274 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 27.

Adding to 140440123100421 its reverse (124001321044041), we get a palindrome (264441444144462).

The spelling of 140440123100421 in words is "one hundred forty trillion, four hundred forty billion, one hundred twenty-three million, one hundred thousand, four hundred twenty-one".