154040842 has 16 divisors (see below), whose sum is σ = 251267400. Its totient is φ = 70530048.

The previous prime is 154040807. The next prime is 154040849. The reversal of 154040842 is 248040451.

154040842 is digitally balanced in base 3, 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 4 ways, for example, as 138509361 + 15531481 = 11769^2 + 3941^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 154040842.

It is not an unprimeable number, because it can be changed into a prime (154040849) 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 in 7 ways as a sum of consecutive naturals, for example, 59967 + ... + 62482.

Almost surely, 2^154040842 is an apocalyptic number.

154040842 is a deficient number, since it is larger than the sum of its proper divisors (97226558).

154040842 is a wasteful number, since it uses less digits than its factorization.

154040842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122505.

The product of its (nonzero) digits is 5120, while the sum is 28.

The square root of 154040842 is about 12411.3191079756. The cubic root of 154040842 is about 536.0582216588.

The spelling of 154040842 in words is "one hundred fifty-four million, forty thousand, eight hundred forty-two".