47742231 has 8 divisors (see below), whose sum is σ = 67006720. Its totient is φ = 30152952.

The previous prime is 47742209. The next prime is 47742259. The reversal of 47742231 is 13224774.

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

It is not a de Polignac number, because 47742231 - 2¹⁸ = 47480087 is a prime.

It is a super-2 number, since 2×47742231² = 4558641241714722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47742281) 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, 418735 + ... + 418848.

It is an arithmetic number, because the mean of its divisors is an integer number (8375840).

Almost surely, 2^47742231 is an apocalyptic number.

47742231 is a deficient number, since it is larger than the sum of its proper divisors (19264489).

47742231 is a wasteful number, since it uses less digits than its factorization.

47742231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 837605.

The product of its digits is 9408, while the sum is 30.

The square root of 47742231 is about 6909.5753125644. The cubic root of 47742231 is about 362.7723986649.

The spelling of 47742231 in words is "forty-seven million, seven hundred forty-two thousand, two hundred thirty-one".