140302400421 has 4 divisors (see below), whose sum is σ = 187069867232. Its totient is φ = 93534933612.

The previous prime is 140302400351. The next prime is 140302400431. The reversal of 140302400421 is 124004203041.

140302400421 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 140302400421 - 2¹³ = 140302392229 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140302400431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23383733401 + ... + 23383733406.

It is an arithmetic number, because the mean of its divisors is an integer number (46767466808).

Almost surely, 2^140302400421 is an apocalyptic number.

It is an amenable number.

140302400421 is a deficient number, since it is larger than the sum of its proper divisors (46767466811).

140302400421 is an equidigital number, since it uses as much as digits as its factorization.

140302400421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46767466810.

The product of its (nonzero) digits is 768, while the sum is 21.

Adding to 140302400421 its reverse (124004203041), we get a palindrome (264306603462).

The spelling of 140302400421 in words is "one hundred forty billion, three hundred two million, four hundred thousand, four hundred twenty-one".