155423234 has 8 divisors (see below), whose sum is σ = 233285628. Its totient is φ = 77661360.

The previous prime is 155423221. The next prime is 155423237. The reversal of 155423234 is 432324551.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 144841225 + 10582009 = 12035^2 + 3253^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 155423197 and 155423206.

It is not an unprimeable number, because it can be changed into a prime (155423237) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21137 + ... + 27524.

Almost surely, 2^155423234 is an apocalyptic number.

155423234 is a deficient number, since it is larger than the sum of its proper divisors (77862394).

155423234 is a wasteful number, since it uses less digits than its factorization.

155423234 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50260.

The product of its digits is 14400, while the sum is 29.

The square root of 155423234 is about 12466.8854971881. The cubic root of 155423234 is about 537.6570115666.

Adding to 155423234 its reverse (432324551), we get a palindrome (587747785).

The spelling of 155423234 in words is "one hundred fifty-five million, four hundred twenty-three thousand, two hundred thirty-four".