47749242 has 32 divisors (see below), whose sum is σ = 104901120. Its totient is φ = 14422320.

The previous prime is 47749241. The next prime is 47749249. The reversal of 47749242 is 24294774.

47749242 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×47749242² = 4559980223149128, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 47749242.

It is not an unprimeable number, because it can be changed into a prime (47749241) 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 15 ways as a sum of consecutive naturals, for example, 6484 + ... + 11727.

It is an arithmetic number, because the mean of its divisors is an integer number (3278160).

Almost surely, 2^47749242 is an apocalyptic number.

47749242 is an abundant number, since it is smaller than the sum of its proper divisors (57151878).

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

47749242 is a wasteful number, since it uses less digits than its factorization.

47749242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18258.

The product of its digits is 112896, while the sum is 39.

The square root of 47749242 is about 6910.0826333699. The cubic root of 47749242 is about 362.7901556398.

The spelling of 47749242 in words is "forty-seven million, seven hundred forty-nine thousand, two hundred forty-two".