402144420001 has 8 divisors (see below), whose sum is σ = 405987290280. Its totient is φ = 398306533632.

The previous prime is 402144419917. The next prime is 402144420017. The reversal of 402144420001 is 100024441204.

It can be written as a sum of positive squares in 4 ways, for example, as 39229744225 + 362914675776 = 198065^2 + 602424^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 402144420001 - 2¹⁵ = 402144387233 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (402144420401) 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, 1083730 + ... + 1406683.

It is an arithmetic number, because the mean of its divisors is an integer number (50748411285).

Almost surely, 2^402144420001 is an apocalyptic number.

It is an amenable number.

402144420001 is a deficient number, since it is larger than the sum of its proper divisors (3842870279).

402144420001 is a wasteful number, since it uses less digits than its factorization.

402144420001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2491955.

The product of its (nonzero) digits is 1024, while the sum is 22.

Adding to 402144420001 its reverse (100024441204), we get a palindrome (502168861205).

The spelling of 402144420001 in words is "four hundred two billion, one hundred forty-four million, four hundred twenty thousand, one".