47315242 has 32 divisors (see below), whose sum is σ = 78582672. Its totient is φ = 21233664.

The previous prime is 47315239. The next prime is 47315243. The reversal of 47315242 is 24251374.

It can be written as a sum of positive squares in 8 ways, for example, as 30349081 + 16966161 = 5509^2 + 4119^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 47315242.

It is not an unprimeable number, because it can be changed into a prime (47315243) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 183978 + ... + 184234.

Almost surely, 2^47315242 is an apocalyptic number.

47315242 is a deficient number, since it is larger than the sum of its proper divisors (31267430).

47315242 is a wasteful number, since it uses less digits than its factorization.

47315242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 442.

The product of its digits is 6720, while the sum is 28.

The square root of 47315242 is about 6878.6075625813. The cubic root of 47315242 is about 361.6876572818.

The spelling of 47315242 in words is "forty-seven million, three hundred fifteen thousand, two hundred forty-two".