402143020001 has 2 divisors, whose sum is σ = 402143020002. Its totient is φ = 402143020000.

The previous prime is 402143019991. The next prime is 402143020031. The reversal of 402143020001 is 100020341204.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 396901260001 + 5241760000 = 630001^2 + 72400^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-402143020001 is a prime.

It is not a weakly prime, because it can be changed into another prime (402143020031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 201071510000 + 201071510001.

It is an arithmetic number, because the mean of its divisors is an integer number (201071510001).

Almost surely, 2^402143020001 is an apocalyptic number.

It is an amenable number.

402143020001 is a deficient number, since it is larger than the sum of its proper divisors (1).

402143020001 is an equidigital number, since it uses as much as digits as its factorization.

402143020001 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 192, while the sum is 17.

Adding to 402143020001 its reverse (100020341204), we get a palindrome (502163361205).

The spelling of 402143020001 in words is "four hundred two billion, one hundred forty-three million, twenty thousand, one".