154099 has 4 divisors (see below), whose sum is σ = 168120. Its totient is φ = 140080.

The previous prime is 154097. The next prime is 154111. The reversal of 154099 is 990451.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 154099 - 2¹ = 154097 is a prime.

It is a Duffinian number.

154099 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (154097) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 6994 + ... + 7015.

It is an arithmetic number, because the mean of its divisors is an integer number (42030).

2¹⁵⁴⁰⁹⁹ is an apocalyptic number.

154099 is a deficient number, since it is larger than the sum of its proper divisors (14021).

154099 is a wasteful number, since it uses less digits than its factorization.

154099 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14020.

The product of its (nonzero) digits is 1620, while the sum is 28.

The square root of 154099 is about 392.5544548212. The cubic root of 154099 is about 53.6125675959.

It can be divided in two parts, 15 and 4099, that added together give a palindrome (4114).

The spelling of 154099 in words is "one hundred fifty-four thousand, ninety-nine".