154440043 has 2 divisors, whose sum is σ = 154440044. Its totient is φ = 154440042.

The previous prime is 154440031. The next prime is 154440059. The reversal of 154440043 is 340044451.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-154440043 is a prime.

It is not a weakly prime, because it can be changed into another prime (154440343) 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 as a sum of consecutive naturals, namely, 77220021 + 77220022.

It is an arithmetic number, because the mean of its divisors is an integer number (77220022).

Almost surely, 2^154440043 is an apocalyptic number.

154440043 is a deficient number, since it is larger than the sum of its proper divisors (1).

154440043 is an equidigital number, since it uses as much as digits as its factorization.

154440043 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3840, while the sum is 25.

The square root of 154440043 is about 12427.3908363743. The cubic root of 154440043 is about 536.5208919981.

Adding to 154440043 its reverse (340044451), we get a palindrome (494484494).

The spelling of 154440043 in words is "one hundred fifty-four million, four hundred forty thousand, forty-three".