154198742 has 16 divisors (see below), whose sum is σ = 243334800. Its totient is φ = 73177440.

The previous prime is 154198717. The next prime is 154198769. The reversal of 154198742 is 247891451.

154198742 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 154198742.

It is a congruent number.

It is an unprimeable number.

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, 19109 + ... + 25952.

It is an arithmetic number, because the mean of its divisors is an integer number (15208425).

Almost surely, 2^154198742 is an apocalyptic number.

154198742 is a deficient number, since it is larger than the sum of its proper divisors (89136058).

154198742 is a wasteful number, since it uses less digits than its factorization.

154198742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45151.

The product of its digits is 80640, while the sum is 41.

The square root of 154198742 is about 12417.6786075337. The cubic root of 154198742 is about 536.2413217751.

The spelling of 154198742 in words is "one hundred fifty-four million, one hundred ninety-eight thousand, seven hundred forty-two".