102400430020243 has 2 divisors, whose sum is σ = 102400430020244. Its totient is φ = 102400430020242.

The previous prime is 102400430020223. The next prime is 102400430020253. The reversal of 102400430020243 is 342020034004201.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 102400430020243 - 2¹³ = 102400430012051 is a prime.

It is a super-3 number, since 3×102400430020243³ (a number of 43 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (102400430020223) by changing a digit.

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 as a sum of consecutive naturals, namely, 51200215010121 + 51200215010122.

It is an arithmetic number, because the mean of its divisors is an integer number (51200215010122).

Almost surely, 2^{102400430020243} is an apocalyptic number.

102400430020243 is a deficient number, since it is larger than the sum of its proper divisors (1).

102400430020243 is an equidigital number, since it uses as much as digits as its factorization.

102400430020243 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4608, while the sum is 25.

Adding to 102400430020243 its reverse (342020034004201), we get a palindrome (444420464024444).

The spelling of 102400430020243 in words is "one hundred two trillion, four hundred billion, four hundred thirty million, twenty thousand, two hundred forty-three".