140242331421 has 16 divisors (see below), whose sum is σ = 208095707520. Its totient is φ = 93346706880.

The previous prime is 140242331417. The next prime is 140242331443. The reversal of 140242331421 is 124133242041.

140242331421 is a `hidden beast` number, since 1 + 4 + 0 + 2 + 4 + 233 + 1 + 421 = 666.

It is not a de Polignac number, because 140242331421 - 2² = 140242331417 is a prime.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140242332421) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4098780 + ... + 4132853.

It is an arithmetic number, because the mean of its divisors is an integer number (13005981720).

Almost surely, 2^140242331421 is an apocalyptic number.

It is an amenable number.

140242331421 is a deficient number, since it is larger than the sum of its proper divisors (67853376099).

140242331421 is an equidigital number, since it uses as much as digits as its factorization.

140242331421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8232273 (or 8232267 counting only the distinct ones).

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

Adding to 140242331421 its reverse (124133242041), we get a palindrome (264375573462).

The spelling of 140242331421 in words is "one hundred forty billion, two hundred forty-two million, three hundred thirty-one thousand, four hundred twenty-one".