102420220243 has 8 divisors (see below), whose sum is σ = 111733640640. Its totient is φ = 93107215080.

The previous prime is 102420220211. The next prime is 102420220249. The reversal of 102420220243 is 342022024201.

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

It is not a de Polignac number, because 102420220243 - 2⁵ = 102420220211 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (102420220249) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 649896 + ... + 791962.

It is an arithmetic number, because the mean of its divisors is an integer number (13966705080).

Almost surely, 2^102420220243 is an apocalyptic number.

102420220243 is a deficient number, since it is larger than the sum of its proper divisors (9313420397).

102420220243 is a wasteful number, since it uses less digits than its factorization.

102420220243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 207617.

The product of its (nonzero) digits is 1536, while the sum is 22.

Adding to 102420220243 its reverse (342022024201), we get a palindrome (444442244444).

The spelling of 102420220243 in words is "one hundred two billion, four hundred twenty million, two hundred twenty thousand, two hundred forty-three".