234240138 has 24 divisors (see below), whose sum is σ = 553658976. Its totient is φ = 70981800.

The previous prime is 234240133. The next prime is 234240179. The reversal of 234240138 is 831042432.

It is a Smith number, since the sum of its digits (27) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (234240131) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 591318 + ... + 591713.

It is an arithmetic number, because the mean of its divisors is an integer number (23069124).

Almost surely, 2^234240138 is an apocalyptic number.

234240138 is an abundant number, since it is smaller than the sum of its proper divisors (319418838).

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

234240138 is a wasteful number, since it uses less digits than its factorization.

234240138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1183050 (or 1183047 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 27.

The square root of 234240138 is about 15304.9056841263. The cubic root of 234240138 is about 616.4347387224.

The spelling of 234240138 in words is "two hundred thirty-four million, two hundred forty thousand, one hundred thirty-eight".