154442222 has 24 divisors (see below), whose sum is σ = 268048200. Its totient is φ = 66504240.

The previous prime is 154442221. The next prime is 154442237. The reversal of 154442222 is 222244451.

It is a junction number, because it is equal to n+sod(n) for n = 154442191 and 154442200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (154442221) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12197 + ... + 21392.

It is an arithmetic number, because the mean of its divisors is an integer number (11168675).

Almost surely, 2^154442222 is an apocalyptic number.

154442222 is a deficient number, since it is larger than the sum of its proper divisors (113605978).

154442222 is a wasteful number, since it uses less digits than its factorization.

154442222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33632 (or 33621 counting only the distinct ones).

The product of its digits is 5120, while the sum is 26.

The square root of 154442222 is about 12427.4785053123. The cubic root of 154442222 is about 536.5234152503.

Adding to 154442222 its reverse (222244451), we get a palindrome (376686673).

The spelling of 154442222 in words is "one hundred fifty-four million, four hundred forty-two thousand, two hundred twenty-two".