1249842353 has 4 divisors (see below), whose sum is σ = 1249919268. Its totient is φ = 1249765440.

The previous prime is 1249842337. The next prime is 1249842361. The reversal of 1249842353 is 3532489421.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 576336049 + 673506304 = 24007^2 + 25952^2 .

It is a cyclic number.

It is not a de Polignac number, because 1249842353 - 2⁴ = 1249842337 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1249842353.

It is not an unprimeable number, because it can be changed into a prime (1249842313) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3476 + ... + 50117.

It is an arithmetic number, because the mean of its divisors is an integer number (312479817).

Almost surely, 2^1249842353 is an apocalyptic number.

It is an amenable number.

1249842353 is a deficient number, since it is larger than the sum of its proper divisors (76915).

1249842353 is an equidigital number, since it uses as much as digits as its factorization.

1249842353 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76914.

The product of its digits is 207360, while the sum is 41.

The square root of 1249842353 is about 35353.1095237746. The cubic root of 1249842353 is about 1077.1720577566.

The spelling of 1249842353 in words is "one billion, two hundred forty-nine million, eight hundred forty-two thousand, three hundred fifty-three".