42723134 has 8 divisors (see below), whose sum is σ = 67457640. Its totient is φ = 20237256.

The previous prime is 42723103. The next prime is 42723137. The reversal of 42723134 is 43132724.

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

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42723137) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 562109 + ... + 562184.

It is an arithmetic number, because the mean of its divisors is an integer number (8432205).

Almost surely, 2^42723134 is an apocalyptic number.

42723134 is a deficient number, since it is larger than the sum of its proper divisors (24734506).

42723134 is a wasteful number, since it uses less digits than its factorization.

42723134 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1124314.

The product of its digits is 4032, while the sum is 26.

The square root of 42723134 is about 6536.2935980569. The cubic root of 42723134 is about 349.5862703128.

Adding to 42723134 its reverse (43132724), we get a palindrome (85855858).

The spelling of 42723134 in words is "forty-two million, seven hundred twenty-three thousand, one hundred thirty-four".