102040434 has 48 divisors (see below), whose sum is σ = 226324800. Its totient is φ = 33216480.

The previous prime is 102040403. The next prime is 102040447. The reversal of 102040434 is 434040201.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 218269 + ... + 218735.

It is an arithmetic number, because the mean of its divisors is an integer number (4715100).

Almost surely, 2^102040434 is an apocalyptic number.

102040434 is an abundant number, since it is smaller than the sum of its proper divisors (124284366).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

102040434 is a wasteful number, since it uses less digits than its factorization.

102040434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 735 (or 732 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 102040434 is about 10101.5065213066. The cubic root of 102040434 is about 467.2946035485.

Adding to 102040434 its reverse (434040201), we get a palindrome (536080635).

The spelling of 102040434 in words is "one hundred two million, forty thousand, four hundred thirty-four".