249066121 has 8 divisors (see below), whose sum is σ = 257593088. Its totient is φ = 240570000.

The previous prime is 249066071. The next prime is 249066131. The reversal of 249066121 is 121660942.

249066121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 249066121 - 2²⁵ = 215511689 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (249066131) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9346 + ... + 24196.

It is an arithmetic number, because the mean of its divisors is an integer number (32199136).

Almost surely, 2^249066121 is an apocalyptic number.

It is an amenable number.

249066121 is a deficient number, since it is larger than the sum of its proper divisors (8526967).

249066121 is a wasteful number, since it uses less digits than its factorization.

249066121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15423.

The product of its (nonzero) digits is 5184, while the sum is 31.

The square root of 249066121 is about 15781.8288230484. The cubic root of 249066121 is about 629.1751369842.

The spelling of 249066121 in words is "two hundred forty-nine million, sixty-six thousand, one hundred twenty-one".