402620343401 has 2 divisors, whose sum is σ = 402620343402. Its totient is φ = 402620343400.

The previous prime is 402620343373. The next prime is 402620343427. The reversal of 402620343401 is 104343026204.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 395107787776 + 7512555625 = 628576^2 + 86675^2 .

It is a cyclic number.

It is not a de Polignac number, because 402620343401 - 2³⁸ = 127742436457 is a prime.

It is not a weakly prime, because it can be changed into another prime (402620343481) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 201310171700 + 201310171701.

It is an arithmetic number, because the mean of its divisors is an integer number (201310171701).

Almost surely, 2^402620343401 is an apocalyptic number.

It is an amenable number.

402620343401 is a deficient number, since it is larger than the sum of its proper divisors (1).

402620343401 is an equidigital number, since it uses as much as digits as its factorization.

402620343401 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13824, while the sum is 29.

Adding to 402620343401 its reverse (104343026204), we get a palindrome (506963369605).

It can be divided in two parts, 4026203 and 43401, that added together give a palindrome (4069604).

The spelling of 402620343401 in words is "four hundred two billion, six hundred twenty million, three hundred forty-three thousand, four hundred one".