1007278243 has 4 divisors (see below), whose sum is σ = 1009087200. Its totient is φ = 1005469288.

The previous prime is 1007278229. The next prime is 1007278249. The reversal of 1007278243 is 3428727001.

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 1007278243 - 2²⁵ = 973723811 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1007278199 and 1007278208.

It is not an unprimeable number, because it can be changed into a prime (1007278249) 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, 903643 + ... + 904756.

It is an arithmetic number, because the mean of its divisors is an integer number (252271800).

Almost surely, 2^1007278243 is an apocalyptic number.

1007278243 is a deficient number, since it is larger than the sum of its proper divisors (1808957).

1007278243 is an equidigital number, since it uses as much as digits as its factorization.

1007278243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1808956.

The product of its (nonzero) digits is 18816, while the sum is 34.

The square root of 1007278243 is about 31737.6470930030. The cubic root of 1007278243 is about 1002.4202188154.

The spelling of 1007278243 in words is "one billion, seven million, two hundred seventy-eight thousand, two hundred forty-three".