247941642 has 16 divisors (see below), whose sum is σ = 534028320. Its totient is φ = 76289712.

The previous prime is 247941613. The next prime is 247941643. The reversal of 247941642 is 246149742.

It is a super-2 number, since 2×247941642² = 122950115675312328, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a self number, because there is not a number n which added to its sum of digits gives 247941642.

It is not an unprimeable number, because it can be changed into a prime (247941643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1589292 + ... + 1589447.

It is an arithmetic number, because the mean of its divisors is an integer number (33376770).

Almost surely, 2^247941642 is an apocalyptic number.

247941642 is an abundant number, since it is smaller than the sum of its proper divisors (286086678).

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

247941642 is a wasteful number, since it uses less digits than its factorization.

247941642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3178757.

The product of its digits is 96768, while the sum is 39.

The square root of 247941642 is about 15746.1627706562. The cubic root of 247941642 is about 628.2268457811.

The spelling of 247941642 in words is "two hundred forty-seven million, nine hundred forty-one thousand, six hundred forty-two".