47442423 has 16 divisors (see below), whose sum is σ = 73210880. Its totient is φ = 26765856.

The previous prime is 47442407. The next prime is 47442497. The reversal of 47442423 is 32424474.

It is a happy number.

It is not a de Polignac number, because 47442423 - 2⁴ = 47442407 is a prime.

It is a super-2 number, since 2×47442423² = 4501567000221858, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47442823) 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, 12640 + ... + 15957.

It is an arithmetic number, because the mean of its divisors is an integer number (4575680).

Almost surely, 2^47442423 is an apocalyptic number.

47442423 is a deficient number, since it is larger than the sum of its proper divisors (25768457).

47442423 is a wasteful number, since it uses less digits than its factorization.

47442423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28686.

The product of its digits is 21504, while the sum is 30.

The square root of 47442423 is about 6887.8460348646. The cubic root of 47442423 is about 362.0114334575.

Adding to 47442423 its reverse (32424474), we get a palindrome (79866897).

The spelling of 47442423 in words is "forty-seven million, four hundred forty-two thousand, four hundred twenty-three".