42971650 has 12 divisors (see below), whose sum is σ = 79927362. Its totient is φ = 17188640.

The previous prime is 42971641. The next prime is 42971651. The reversal of 42971650 is 5617924.

It can be written as a sum of positive squares in 3 ways, for example, as 38056561 + 4915089 = 6169^2 + 2217^2 .

It is not an unprimeable number, because it can be changed into a prime (42971651) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 429667 + ... + 429766.

Almost surely, 2^42971650 is an apocalyptic number.

42971650 is a deficient number, since it is larger than the sum of its proper divisors (36955712).

42971650 is a wasteful number, since it uses less digits than its factorization.

42971650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 859445 (or 859440 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 34.

The square root of 42971650 is about 6555.2765006520. The cubic root of 42971650 is about 350.2627958289.

The spelling of 42971650 in words is "forty-two million, nine hundred seventy-one thousand, six hundred fifty".