102040434243 has 48 divisors (see below), whose sum is σ = 164482845696. Its totient is φ = 60427086720.

The previous prime is 102040434217. The next prime is 102040434247. The reversal of 102040434243 is 342434040201.

It is a happy number.

102040434243 is a `hidden beast` number, since 1 + 0 + 204 + 0 + 434 + 24 + 3 = 666.

It is not a de Polignac number, because 102040434243 - 2¹⁷ = 102040303171 is a prime.

It is not an unprimeable number, because it can be changed into a prime (102040434247) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2853130 + ... + 2888672.

It is an arithmetic number, because the mean of its divisors is an integer number (3426725952).

Almost surely, 2^102040434243 is an apocalyptic number.

102040434243 is a deficient number, since it is larger than the sum of its proper divisors (62442411453).

102040434243 is a wasteful number, since it uses less digits than its factorization.

102040434243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36224 (or 36221 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 27.

Adding to 102040434243 its reverse (342434040201), we get a palindrome (444474474444).

The spelling of 102040434243 in words is "one hundred two billion, forty million, four hundred thirty-four thousand, two hundred forty-three".