154342243 has 4 divisors (see below), whose sum is σ = 168373368. Its totient is φ = 140311120.

The previous prime is 154342231. The next prime is 154342249. The reversal of 154342243 is 342243451.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 154342243 - 2¹⁷ = 154211171 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (154342249) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7015546 + ... + 7015567.

It is an arithmetic number, because the mean of its divisors is an integer number (42093342).

Almost surely, 2^154342243 is an apocalyptic number.

154342243 is a deficient number, since it is larger than the sum of its proper divisors (14031125).

154342243 is a wasteful number, since it uses less digits than its factorization.

154342243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14031124.

The product of its digits is 11520, while the sum is 28.

The square root of 154342243 is about 12423.4553567033. The cubic root of 154342243 is about 536.4076164898.

Adding to 154342243 its reverse (342243451), we get a palindrome (496585694).

The spelling of 154342243 in words is "one hundred fifty-four million, three hundred forty-two thousand, two hundred forty-three".