102001123434 has 64 divisors (see below), whose sum is σ = 236790457344. Its totient is φ = 28690039296.

The previous prime is 102001123429. The next prime is 102001123463. The reversal of 102001123434 is 434321100201.

It is a super-3 number, since 3×102001123434³ (a number of 34 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a self number, because there is not a number n which added to its sum of digits gives 102001123434.

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 31 ways as a sum of consecutive naturals, for example, 934842 + ... + 1038234.

It is an arithmetic number, because the mean of its divisors is an integer number (3699850896).

Almost surely, 2^102001123434 is an apocalyptic number.

102001123434 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 102001123434, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (118395228672).

102001123434 is an abundant number, since it is smaller than the sum of its proper divisors (134789333910).

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

102001123434 is a wasteful number, since it uses less digits than its factorization.

102001123434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103771.

The product of its (nonzero) digits is 576, while the sum is 21.

Adding to 102001123434 its reverse (434321100201), we get a palindrome (536322223635).

The spelling of 102001123434 in words is "one hundred two billion, one million, one hundred twenty-three thousand, four hundred thirty-four".