140438421854 has 16 divisors (see below), whose sum is σ = 215744853408. Its totient is φ = 68543304192.

The previous prime is 140438421821. The next prime is 140438421859. The reversal of 140438421854 is 458124834041.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140438421859) 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, 4944122 + ... + 4972445.

It is an arithmetic number, because the mean of its divisors is an integer number (13484053338).

Almost surely, 2^140438421854 is an apocalyptic number.

140438421854 is a deficient number, since it is larger than the sum of its proper divisors (75306431554).

140438421854 is an equidigital number, since it uses as much as digits as its factorization.

140438421854 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9916739.

The product of its (nonzero) digits is 491520, while the sum is 44.

The spelling of 140438421854 in words is "one hundred forty billion, four hundred thirty-eight million, four hundred twenty-one thousand, eight hundred fifty-four".