234420123 has 32 divisors (see below), whose sum is σ = 388468224. Its totient is φ = 122660352.

The previous prime is 234420107. The next prime is 234420181. The reversal of 234420123 is 321024432.

It is not a de Polignac number, because 234420123 - 2⁴ = 234420107 is a prime.

It is a super-3 number, since 3×234420123³ (a number of 26 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 234420123.

It is not an unprimeable number, because it can be changed into a prime (234420103) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4336 + ... + 22082.

It is an arithmetic number, because the mean of its divisors is an integer number (12139632).

Almost surely, 2^234420123 is an apocalyptic number.

234420123 is a deficient number, since it is larger than the sum of its proper divisors (154048101).

234420123 is a wasteful number, since it uses less digits than its factorization.

234420123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17811.

The product of its (nonzero) digits is 1152, while the sum is 21.

The square root of 234420123 is about 15310.7845324791. The cubic root of 234420123 is about 616.5925832925.

Adding to 234420123 its reverse (321024432), we get a palindrome (555444555).

The spelling of 234420123 in words is "two hundred thirty-four million, four hundred twenty thousand, one hundred twenty-three".