123421434130 has 48 divisors (see below), whose sum is σ = 237334950720. Its totient is φ = 46123766304.

The previous prime is 123421434127. The next prime is 123421434131. The reversal of 123421434130 is 31434124321.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (123421434131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 280161 + ... + 570379.

It is an arithmetic number, because the mean of its divisors is an integer number (4944478140).

Almost surely, 2^123421434130 is an apocalyptic number.

123421434130 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

123421434130 is a deficient number, since it is larger than the sum of its proper divisors (113913516590).

123421434130 is a wasteful number, since it uses less digits than its factorization.

123421434130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 290335 (or 290292 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 28.

Adding to 123421434130 its reverse (31434124321), we get a palindrome (154855558451).

The spelling of 123421434130 in words is "one hundred twenty-three billion, four hundred twenty-one million, four hundred thirty-four thousand, one hundred thirty".