247972043 has 4 divisors (see below), whose sum is σ = 270514968. Its totient is φ = 225429120.

The previous prime is 247972037. The next prime is 247972051. The reversal of 247972043 is 340279742.

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 247972043 - 2⁴ = 247972027 is a prime.

It is a super-2 number, since 2×247972043² = 122980268219187698, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 247971988 and 247972006.

It is not an unprimeable number, because it can be changed into a prime (247972003) 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, 11271446 + ... + 11271467.

It is an arithmetic number, because the mean of its divisors is an integer number (67628742).

Almost surely, 2^247972043 is an apocalyptic number.

247972043 is a deficient number, since it is larger than the sum of its proper divisors (22542925).

247972043 is a wasteful number, since it uses less digits than its factorization.

247972043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22542924.

The product of its (nonzero) digits is 84672, while the sum is 38.

The square root of 247972043 is about 15747.1280873688. The cubic root of 247972043 is about 628.2525211021.

The spelling of 247972043 in words is "two hundred forty-seven million, nine hundred seventy-two thousand, forty-three".