249426245 has 8 divisors (see below), whose sum is σ = 309632760. Its totient is φ = 192660160.

The previous prime is 249426223. The next prime is 249426253. The reversal of 249426245 is 542624942.

It can be written as a sum of positive squares in 4 ways, for example, as 7396 + 249418849 = 86^2 + 15793^2 .

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

It is not a de Polignac number, because 249426245 - 2¹⁸ = 249164101 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 249426199 and 249426208.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 859946 + ... + 860235.

It is an arithmetic number, because the mean of its divisors is an integer number (38704095).

Almost surely, 2^249426245 is an apocalyptic number.

It is an amenable number.

249426245 is a deficient number, since it is larger than the sum of its proper divisors (60206515).

249426245 is a wasteful number, since it uses less digits than its factorization.

249426245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1720215.

The product of its digits is 138240, while the sum is 38.

The square root of 249426245 is about 15793.2341526364. The cubic root of 249426245 is about 629.4782318003.

The spelling of 249426245 in words is "two hundred forty-nine million, four hundred twenty-six thousand, two hundred forty-five".