42731204 has 12 divisors (see below), whose sum is σ = 75194028. Its totient is φ = 21247200.

The previous prime is 42731203. The next prime is 42731219. The reversal of 42731204 is 40213724.

It can be written as a sum of positive squares in 2 ways, for example, as 4884100 + 37847104 = 2210^2 + 6152^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 42731204.

It is not an unprimeable number, because it can be changed into a prime (42731201) 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, 28787 + ... + 30234.

It is an arithmetic number, because the mean of its divisors is an integer number (6266169).

Almost surely, 2^42731204 is an apocalyptic number.

It is an amenable number.

42731204 is a deficient number, since it is larger than the sum of its proper divisors (32462824).

42731204 is a wasteful number, since it uses less digits than its factorization.

42731204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59206 (or 59204 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 23.

The square root of 42731204 is about 6536.9108912391. The cubic root of 42731204 is about 349.6082801181.

Adding to 42731204 its reverse (40213724), we get a palindrome (82944928).

The spelling of 42731204 in words is "forty-two million, seven hundred thirty-one thousand, two hundred four".