140312400421 has 8 divisors (see below), whose sum is σ = 150601224024. Its totient is φ = 130249704960.

The previous prime is 140312400407. The next prime is 140312400433. The reversal of 140312400421 is 124004213041.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 91863548100 + 48448852321 = 303090^2 + 220111^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 140312400421 - 2²¹ = 140310303269 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 140312400392 and 140312400401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140312400491) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 56530750 + ... + 56533231.

It is an arithmetic number, because the mean of its divisors is an integer number (18825153003).

Almost surely, 2^140312400421 is an apocalyptic number.

It is an amenable number.

140312400421 is a deficient number, since it is larger than the sum of its proper divisors (10288823603).

140312400421 is a wasteful number, since it uses less digits than its factorization.

140312400421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113064071.

The product of its (nonzero) digits is 768, while the sum is 22.

Adding to 140312400421 its reverse (124004213041), we get a palindrome (264316613462).

The spelling of 140312400421 in words is "one hundred forty billion, three hundred twelve million, four hundred thousand, four hundred twenty-one".