402104520073 has 2 divisors, whose sum is σ = 402104520074. Its totient is φ = 402104520072.

The previous prime is 402104519989. The next prime is 402104520127. The reversal of 402104520073 is 370025401204.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 211132898064 + 190971622009 = 459492^2 + 437003^2 .

It is a cyclic number.

It is not a de Polignac number, because 402104520073 - 2²¹ = 402102422921 is a prime.

It is not a weakly prime, because it can be changed into another prime (402104590073) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 201052260036 + 201052260037.

It is an arithmetic number, because the mean of its divisors is an integer number (201052260037).

Almost surely, 2^402104520073 is an apocalyptic number.

It is an amenable number.

402104520073 is a deficient number, since it is larger than the sum of its proper divisors (1).

402104520073 is an equidigital number, since it uses as much as digits as its factorization.

402104520073 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6720, while the sum is 28.

Adding to 402104520073 its reverse (370025401204), we get a palindrome (772129921277).

The spelling of 402104520073 in words is "four hundred two billion, one hundred four million, five hundred twenty thousand, seventy-three".