42723471 has 16 divisors (see below), whose sum is σ = 65836800. Its totient is φ = 24138048.

The previous prime is 42723449. The next prime is 42723479. The reversal of 42723471 is 17432724.

It is not a de Polignac number, because 42723471 - 2⁶ = 42723407 is a prime.

It is a super-3 number, since 3×42723471³ (a number of 24 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42723479) 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, 9561 + ... + 13298.

It is an arithmetic number, because the mean of its divisors is an integer number (4114800).

Almost surely, 2^42723471 is an apocalyptic number.

42723471 is a deficient number, since it is larger than the sum of its proper divisors (23113329).

42723471 is a wasteful number, since it uses less digits than its factorization.

42723471 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22958.

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

The square root of 42723471 is about 6536.3193771418. The cubic root of 42723471 is about 349.5871894890.

The spelling of 42723471 in words is "forty-two million, seven hundred twenty-three thousand, four hundred seventy-one".