123042243430 has 16 divisors (see below), whose sum is σ = 221542587504. Its totient is φ = 49202108640.

The previous prime is 123042243421. The next prime is 123042243451. The reversal of 123042243430 is 34342240321.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1813617 + ... + 1880236.

It is an arithmetic number, because the mean of its divisors is an integer number (13846411719).

Almost surely, 2^123042243430 is an apocalyptic number.

123042243430 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

123042243430 is a deficient number, since it is larger than the sum of its proper divisors (98500344074).

123042243430 is a wasteful number, since it uses less digits than its factorization.

123042243430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3697191.

The product of its (nonzero) digits is 13824, while the sum is 28.

Adding to 123042243430 its reverse (34342240321), we get a palindrome (157384483751).

The spelling of 123042243430 in words is "one hundred twenty-three billion, forty-two million, two hundred forty-three thousand, four hundred thirty".