69042947 has 4 divisors (see below), whose sum is σ = 69184056. Its totient is φ = 68901840.

The previous prime is 69042943. The next prime is 69042949. The reversal of 69042947 is 74924096.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 69042947 - 2² = 69042943 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (69042943) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 69818 + ... + 70799.

It is an arithmetic number, because the mean of its divisors is an integer number (17296014).

Almost surely, 2^69042947 is an apocalyptic number.

69042947 is a deficient number, since it is larger than the sum of its proper divisors (141109).

69042947 is a wasteful number, since it uses less digits than its factorization.

69042947 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141108.

The product of its (nonzero) digits is 108864, while the sum is 41.

The square root of 69042947 is about 8309.2085664039. The cubic root of 69042947 is about 410.2416719162.

The spelling of 69042947 in words is "sixty-nine million, forty-two thousand, nine hundred forty-seven".