153242123 has 8 divisors (see below), whose sum is σ = 164227488. Its totient is φ = 142617024.

The previous prime is 153242107. The next prime is 153242129. The reversal of 153242123 is 321242351.

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

It is a cyclic number.

It is not a de Polignac number, because 153242123 - 2⁴ = 153242107 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (153242129) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 89186 + ... + 90887.

It is an arithmetic number, because the mean of its divisors is an integer number (20528436).

Almost surely, 2^153242123 is an apocalyptic number.

153242123 is a deficient number, since it is larger than the sum of its proper divisors (10985365).

153242123 is a wasteful number, since it uses less digits than its factorization.

153242123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 180133.

The product of its digits is 1440, while the sum is 23.

The square root of 153242123 is about 12379.1002500182. The cubic root of 153242123 is about 535.1301083973.

Adding to 153242123 its reverse (321242351), we get a palindrome (474484474).

The spelling of 153242123 in words is "one hundred fifty-three million, two hundred forty-two thousand, one hundred twenty-three".