249154 has 4 divisors (see below), whose sum is σ = 373734. Its totient is φ = 124576.

The previous prime is 249143. The next prime is 249181. The reversal of 249154 is 451942.

249154 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It can be written as a sum of positive squares in only one way, i.e., 178929 + 70225 = 423^2 + 265^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62287 + ... + 62290.

2²⁴⁹¹⁵⁴ is an apocalyptic number.

249154 is a deficient number, since it is larger than the sum of its proper divisors (124580).

249154 is a wasteful number, since it uses less digits than its factorization.

249154 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 124579.

The product of its digits is 1440, while the sum is 25.

The square root of 249154 is about 499.1532830704. The cubic root of 249154 is about 62.9249126413.

The spelling of 249154 in words is "two hundred forty-nine thousand, one hundred fifty-four".