247424145 has 8 divisors (see below), whose sum is σ = 395878656. Its totient is φ = 131959536.

The previous prime is 247424123. The next prime is 247424147. The reversal of 247424145 is 541424742.

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

It is not a de Polignac number, because 247424145 - 2⁹ = 247423633 is a prime.

It is a super-2 number, since 2×247424145² = 122437415057962050, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (247424147) 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, 8247457 + ... + 8247486.

It is an arithmetic number, because the mean of its divisors is an integer number (49484832).

Almost surely, 2^247424145 is an apocalyptic number.

It is an amenable number.

247424145 is a deficient number, since it is larger than the sum of its proper divisors (148454511).

247424145 is a wasteful number, since it uses less digits than its factorization.

247424145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16494951.

The product of its digits is 35840, while the sum is 33.

The square root of 247424145 is about 15729.7217076463. The cubic root of 247424145 is about 627.7894687276.

Adding to 247424145 its reverse (541424742), we get a palindrome (788848887).

The spelling of 247424145 in words is "two hundred forty-seven million, four hundred twenty-four thousand, one hundred forty-five".