42705032 has 8 divisors (see below), whose sum is σ = 80071950. Its totient is φ = 21352512.

The previous prime is 42705029. The next prime is 42705049. The reversal of 42705032 is 23050724.

It can be written as a sum of positive squares in only one way, i.e., 42328036 + 376996 = 6506^2 + 614^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a junction number, because it is equal to n+sod(n) for n = 42704989 and 42705007.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2669057 + ... + 2669072.

Almost surely, 2^42705032 is an apocalyptic number.

It is an amenable number.

42705032 is a deficient number, since it is larger than the sum of its proper divisors (37366918).

42705032 is a wasteful number, since it uses less digits than its factorization.

42705032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5338135 (or 5338131 counting only the distinct ones).

The product of its (nonzero) digits is 1680, while the sum is 23.

The square root of 42705032 is about 6534.9087216273. The cubic root of 42705032 is about 349.5368895359.

Adding to 42705032 its reverse (23050724), we get a palindrome (65755756).

The spelling of 42705032 in words is "forty-two million, seven hundred five thousand, thirty-two".