154043434 has 4 divisors (see below), whose sum is σ = 231065154. Its totient is φ = 77021716.

The previous prime is 154043423. The next prime is 154043441. The reversal of 154043434 is 434340451.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 434340451 = 181 ⋅2399671.

It can be written as a sum of positive squares in only one way, i.e., 148913209 + 5130225 = 12203^2 + 2265^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38510857 + ... + 38510860.

Almost surely, 2^154043434 is an apocalyptic number.

154043434 is a deficient number, since it is larger than the sum of its proper divisors (77021720).

154043434 is an equidigital number, since it uses as much as digits as its factorization.

154043434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77021719.

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

The square root of 154043434 is about 12411.4235283468. The cubic root of 154043434 is about 536.0612283400.

Adding to 154043434 its reverse (434340451), we get a palindrome (588383885).

The spelling of 154043434 in words is "one hundred fifty-four million, forty-three thousand, four hundred thirty-four".