42971069 has 8 divisors (see below), whose sum is σ = 44955000. Its totient is φ = 41020672.

The previous prime is 42971059. The next prime is 42971077. The reversal of 42971069 is 96017924.

It can be written as a sum of positive squares in 4 ways, for example, as 5943844 + 37027225 = 2438^2 + 6085^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 42971069 - 2⁸ = 42970813 is a prime.

It is a super-2 number, since 2×42971069² = 3693025542005522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42971039) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5744 + ... + 10905.

It is an arithmetic number, because the mean of its divisors is an integer number (5619375).

Almost surely, 2^42971069 is an apocalyptic number.

It is an amenable number.

42971069 is a deficient number, since it is larger than the sum of its proper divisors (1983931).

42971069 is a wasteful number, since it uses less digits than its factorization.

42971069 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16767.

The product of its (nonzero) digits is 27216, while the sum is 38.

The square root of 42971069 is about 6555.2321850565. The cubic root of 42971069 is about 350.2612172408.

The spelling of 42971069 in words is "forty-two million, nine hundred seventy-one thousand, sixty-nine".