154821242 has 16 divisors (see below), whose sum is σ = 238008672. Its totient is φ = 75490800.

The previous prime is 154821229. The next prime is 154821259. The reversal of 154821242 is 242128451.

154821242 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 80492 + ... + 82392.

It is an arithmetic number, because the mean of its divisors is an integer number (14875542).

Almost surely, 2^154821242 is an apocalyptic number.

154821242 is a deficient number, since it is larger than the sum of its proper divisors (83187430).

154821242 is a wasteful number, since it uses less digits than its factorization.

154821242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2893.

The product of its digits is 5120, while the sum is 29.

The square root of 154821242 is about 12442.7184328827. The cubic root of 154821242 is about 536.9619546116.

Adding to 154821242 its reverse (242128451), we get a palindrome (396949693).

The spelling of 154821242 in words is "one hundred fifty-four million, eight hundred twenty-one thousand, two hundred forty-two".