234145405 has 16 divisors (see below), whose sum is σ = 315745920. Its totient is φ = 165388608.

The previous prime is 234145397. The next prime is 234145409. The reversal of 234145405 is 504541432.

It is a cyclic number.

It is not a de Polignac number, because 234145405 - 2³ = 234145397 is a prime.

It is a super-2 number, since 2×234145405² = 109648141365228050, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (234145409) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 76815 + ... + 79804.

It is an arithmetic number, because the mean of its divisors is an integer number (19734120).

Almost surely, 2^234145405 is an apocalyptic number.

It is an amenable number.

234145405 is a deficient number, since it is larger than the sum of its proper divisors (81600515).

234145405 is a wasteful number, since it uses less digits than its factorization.

234145405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 156660.

The product of its (nonzero) digits is 9600, while the sum is 28.

The square root of 234145405 is about 15301.8105137922. The cubic root of 234145405 is about 616.3516265983.

Adding to 234145405 its reverse (504541432), we get a palindrome (738686837).

The spelling of 234145405 in words is "two hundred thirty-four million, one hundred forty-five thousand, four hundred five".