42705232 has 10 divisors (see below), whose sum is σ = 82741418. Its totient is φ = 21352608.

The previous prime is 42705211. The next prime is 42705251. The reversal of 42705232 is 23250724.

It can be written as a sum of positive squares in only one way, i.e., 34999056 + 7706176 = 5916^2 + 2776^2 .

It is a junction number, because it is equal to n+sod(n) for n = 42705197 and 42705206.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1334523 + ... + 1334554.

Almost surely, 2^42705232 is an apocalyptic number.

It is an amenable number.

42705232 is a deficient number, since it is larger than the sum of its proper divisors (40036186).

42705232 is a wasteful number, since it uses less digits than its factorization.

42705232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2669085 (or 2669079 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 25.

The square root of 42705232 is about 6534.9240240419. The cubic root of 42705232 is about 349.5374351958.

Adding to 42705232 its reverse (23250724), we get a palindrome (65955956).

The spelling of 42705232 in words is "forty-two million, seven hundred five thousand, two hundred thirty-two".