42731841 has 8 divisors (see below), whose sum is σ = 57508704. Its totient is φ = 28221440.

The previous prime is 42731831. The next prime is 42731849. The reversal of 42731841 is 14813724.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 42731841 - 2¹¹ = 42729793 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 42731799 and 42731808.

It is not an unprimeable number, because it can be changed into a prime (42731849) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 66240 + ... + 66881.

It is an arithmetic number, because the mean of its divisors is an integer number (7188588).

Almost surely, 2^42731841 is an apocalyptic number.

It is an amenable number.

42731841 is a deficient number, since it is larger than the sum of its proper divisors (14776863).

42731841 is a wasteful number, since it uses less digits than its factorization.

42731841 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133231.

The product of its digits is 5376, while the sum is 30.

The square root of 42731841 is about 6536.9596143773. The cubic root of 42731841 is about 349.6100173293.

The spelling of 42731841 in words is "forty-two million, seven hundred thirty-one thousand, eight hundred forty-one".