402144441002 has 8 divisors (see below), whose sum is σ = 603250450212. Its totient is φ = 201060957600.

The previous prime is 402144440989. The next prime is 402144441011. The reversal of 402144441002 is 200144441204.

It can be written as a sum of positive squares in 2 ways, for example, as 380184461281 + 21959979721 = 616591^2 + 148189^2 .

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

It is a super-2 number, since 2×402144441002² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5586749 + ... + 5658272.

Almost surely, 2^402144441002 is an apocalyptic number.

402144441002 is a deficient number, since it is larger than the sum of its proper divisors (201106009210).

402144441002 is a wasteful number, since it uses less digits than its factorization.

402144441002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11262904.

The product of its (nonzero) digits is 4096, while the sum is 26.

Adding to 402144441002 its reverse (200144441204), we get a palindrome (602288882206).

The spelling of 402144441002 in words is "four hundred two billion, one hundred forty-four million, four hundred forty-one thousand, two".