42945436 has 6 divisors (see below), whose sum is σ = 75154520. Its totient is φ = 21472716.

The previous prime is 42945421. The next prime is 42945443. The reversal of 42945436 is 63454924.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 42945395 and 42945404.

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, 5368176 + ... + 5368183.

Almost surely, 2^42945436 is an apocalyptic number.

It is an amenable number.

42945436 is a deficient number, since it is larger than the sum of its proper divisors (32209084).

42945436 is a wasteful number, since it uses less digits than its factorization.

42945436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10736363 (or 10736361 counting only the distinct ones).

The product of its digits is 103680, while the sum is 37.

The square root of 42945436 is about 6553.2767376329. The cubic root of 42945436 is about 350.1915577249.

It can be divided in two parts, 4294 and 5436, that added together give a triangular number (9730 = T₁₃₉).

The spelling of 42945436 in words is "forty-two million, nine hundred forty-five thousand, four hundred thirty-six".