10202042420455 has 4 divisors (see below), whose sum is σ = 12242450904552. Its totient is φ = 8161633936360.

The previous prime is 10202042420447. The next prime is 10202042420461. The reversal of 10202042420455 is 55402424020201.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 10202042420455 - 2³ = 10202042420447 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1020204242041 + ... + 1020204242050.

It is an arithmetic number, because the mean of its divisors is an integer number (3060612726138).

Almost surely, 2^{10202042420455} is an apocalyptic number.

10202042420455 is a deficient number, since it is larger than the sum of its proper divisors (2040408484097).

10202042420455 is an equidigital number, since it uses as much as digits as its factorization.

10202042420455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2040408484096.

The product of its (nonzero) digits is 25600, while the sum is 31.

Adding to 10202042420455 its reverse (55402424020201), we get a palindrome (65604466440656).

The spelling of 10202042420455 in words is "ten trillion, two hundred two billion, forty-two million, four hundred twenty thousand, four hundred fifty-five".