247424742 has 12 divisors (see below), whose sum is σ = 536086980. Its totient is φ = 82474908.

The previous prime is 247424741. The next prime is 247424747.

247424742 is nontrivially palindromic in base 10.

247424742 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×247424742² = 122438005907533128, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 247424697 and 247424706.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (247424741) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6872892 + ... + 6872927.

It is an arithmetic number, because the mean of its divisors is an integer number (44673915).

Almost surely, 2^247424742 is an apocalyptic number.

247424742 is an abundant number, since it is smaller than the sum of its proper divisors (288662238).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

247424742 is a wasteful number, since it uses less digits than its factorization.

247424742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13745827 (or 13745824 counting only the distinct ones).

The product of its digits is 100352, while the sum is 36.

The square root of 247424742 is about 15729.7406844487. The cubic root of 247424742 is about 627.7899736501.

The spelling of 247424742 in words is "two hundred forty-seven million, four hundred twenty-four thousand, seven hundred forty-two".