154530242 has 8 divisors (see below), whose sum is σ = 231930300. Its totient is φ = 77220144.

The previous prime is 154530223. The next prime is 154530247. The reversal of 154530242 is 242035451.

It is a happy number.

154530242 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 154281241 + 249001 = 12421^2 + 499^2 .

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

It is not an unprimeable number, because it can be changed into a prime (154530247) 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, 18017 + ... + 25172.

Almost surely, 2^154530242 is an apocalyptic number.

154530242 is a deficient number, since it is larger than the sum of its proper divisors (77400058).

154530242 is a wasteful number, since it uses less digits than its factorization.

154530242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44980.

The product of its (nonzero) digits is 4800, while the sum is 26.

The square root of 154530242 is about 12431.0193467792. The cubic root of 154530242 is about 536.6253213693.

Adding to 154530242 its reverse (242035451), we get a palindrome (396565693).

The spelling of 154530242 in words is "one hundred fifty-four million, five hundred thirty thousand, two hundred forty-two".