1440421420413 has 16 divisors (see below), whose sum is σ = 2033563790016. Its totient is φ = 903781536000.

The previous prime is 1440421420411. The next prime is 1440421420469. The reversal of 1440421420413 is 3140241240441.

It is a happy number.

It is not a de Polignac number, because 1440421420413 - 2¹ = 1440421420411 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1440421420411) 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, 4907038 + ... + 5192288.

It is an arithmetic number, because the mean of its divisors is an integer number (127097736876).

Almost surely, 2^{1440421420413} is an apocalyptic number.

It is an amenable number.

1440421420413 is a deficient number, since it is larger than the sum of its proper divisors (593142369603).

1440421420413 is a wasteful number, since it uses less digits than its factorization.

1440421420413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 384284.

The product of its (nonzero) digits is 12288, while the sum is 30.

Adding to 1440421420413 its reverse (3140241240441), we get a palindrome (4580662660854).

The spelling of 1440421420413 in words is "one trillion, four hundred forty billion, four hundred twenty-one million, four hundred twenty thousand, four hundred thirteen".