123042335430 has 128 divisors (see below), whose sum is σ = 344598912000. Its totient is φ = 28105684992.

The previous prime is 123042335413. The next prime is 123042335459. The reversal of 123042335430 is 34533240321.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 21739941 + ... + 21745599.

It is an arithmetic number, because the mean of its divisors is an integer number (2692179000).

Almost surely, 2^123042335430 is an apocalyptic number.

123042335430 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 123042335430, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (172299456000).

123042335430 is an abundant number, since it is smaller than the sum of its proper divisors (221556576570).

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

123042335430 is a wasteful number, since it uses less digits than its factorization.

123042335430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7803 (or 7789 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 30.

Adding to 123042335430 its reverse (34533240321), we get a palindrome (157575575751).

The spelling of 123042335430 in words is "one hundred twenty-three billion, forty-two million, three hundred thirty-five thousand, four hundred thirty".