1400442423121 has 4 divisors (see below), whose sum is σ = 1600505626432. Its totient is φ = 1200379219812.

The previous prime is 1400442423119. The next prime is 1400442423143. The reversal of 1400442423121 is 1213242440041.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1400442423121 - 2¹ = 1400442423119 is a prime.

It is a super-2 number, since 2×1400442423121² (a number of 25 digits) contains 22 as substring.

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 1400442423121.

It is not an unprimeable number, because it can be changed into a prime (1400442423151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 100031601645 + ... + 100031601658.

It is an arithmetic number, because the mean of its divisors is an integer number (400126406608).

Almost surely, 2^{1400442423121} is an apocalyptic number.

It is an amenable number.

1400442423121 is a deficient number, since it is larger than the sum of its proper divisors (200063203311).

1400442423121 is an equidigital number, since it uses as much as digits as its factorization.

1400442423121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 200063203310.

The product of its (nonzero) digits is 6144, while the sum is 28.

Adding to 1400442423121 its reverse (1213242440041), we get a palindrome (2613684863162).

The spelling of 1400442423121 in words is "one trillion, four hundred billion, four hundred forty-two million, four hundred twenty-three thousand, one hundred twenty-one".