47442681 has 48 divisors (see below), whose sum is σ = 81349632. Its totient is φ = 26265600.

The previous prime is 47442673. The next prime is 47442683. The reversal of 47442681 is 18624474.

It is not a de Polignac number, because 47442681 - 2³ = 47442673 is a prime.

It is a super-2 number, since 2×47442681² = 4501615960935522, which contains 22 as substring.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (47442683) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 245721 + ... + 245913.

It is an arithmetic number, because the mean of its divisors is an integer number (1694784).

Almost surely, 2^47442681 is an apocalyptic number.

It is an amenable number.

47442681 is a deficient number, since it is larger than the sum of its proper divisors (33906951).

47442681 is a wasteful number, since it uses less digits than its factorization.

47442681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 414 (or 411 counting only the distinct ones).

The product of its digits is 43008, while the sum is 36.

The square root of 47442681 is about 6887.8647634808. The cubic root of 47442681 is about 362.0120896830.

The spelling of 47442681 in words is "forty-seven million, four hundred forty-two thousand, six hundred eighty-one".