402144340301 has 4 divisors (see below), whose sum is σ = 438702916704. Its totient is φ = 365585763900.

The previous prime is 402144340291. The next prime is 402144340321. The reversal of 402144340301 is 103043441204.

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 a de Polignac number, because none of the positive numbers 2^k-402144340301 is a prime.

It is a super-2 number, since 2×402144340301² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (402144340321) 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, 18279288185 + ... + 18279288206.

It is an arithmetic number, because the mean of its divisors is an integer number (109675729176).

Almost surely, 2^402144340301 is an apocalyptic number.

It is an amenable number.

402144340301 is a deficient number, since it is larger than the sum of its proper divisors (36558576403).

402144340301 is a wasteful number, since it uses less digits than its factorization.

402144340301 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36558576402.

The product of its (nonzero) digits is 4608, while the sum is 26.

Adding to 402144340301 its reverse (103043441204), we get a palindrome (505187781505).

The spelling of 402144340301 in words is "four hundred two billion, one hundred forty-four million, three hundred forty thousand, three hundred one".