140440404043021 has 8 divisors (see below), whose sum is σ = 148055223481344. Its totient is φ = 133018364843760.

The previous prime is 140440404043013. The next prime is 140440404043057. The reversal of 140440404043021 is 120340404044041.

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

It is not a de Polignac number, because 140440404043021 - 2³ = 140440404043013 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140440404043721) 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, 48195058270 + ... + 48195061183.

It is an arithmetic number, because the mean of its divisors is an integer number (18506902935168).

Almost surely, 2^{140440404043021} is an apocalyptic number.

It is an amenable number.

140440404043021 is a deficient number, since it is larger than the sum of its proper divisors (7614819438323).

140440404043021 is an equidigital number, since it uses as much as digits as its factorization.

140440404043021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96390119531.

The product of its (nonzero) digits is 24576, while the sum is 31.

Adding to 140440404043021 its reverse (120340404044041), we get a palindrome (260780808087062).

The spelling of 140440404043021 in words is "one hundred forty trillion, four hundred forty billion, four hundred four million, forty-three thousand, twenty-one".