1401421340023 has 4 divisors (see below), whose sum is σ = 1401437695840. Its totient is φ = 1401404984208.

The previous prime is 1401421339991. The next prime is 1401421340041. The reversal of 1401421340023 is 3200431241041.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1401421340023 - 2⁵ = 1401421339991 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1401421340023.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1401421340083) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8048703 + ... + 8220976.

It is an arithmetic number, because the mean of its divisors is an integer number (350359423960).

Almost surely, 2^{1401421340023} is an apocalyptic number.

1401421340023 is a deficient number, since it is larger than the sum of its proper divisors (16355817).

1401421340023 is an equidigital number, since it uses as much as digits as its factorization.

1401421340023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16355816.

The product of its (nonzero) digits is 2304, while the sum is 25.

Adding to 1401421340023 its reverse (3200431241041), we get a palindrome (4601852581064).

The spelling of 1401421340023 in words is "one trillion, four hundred one billion, four hundred twenty-one million, three hundred forty thousand, twenty-three".