42929147 has 4 divisors (see below), whose sum is σ = 43192680. Its totient is φ = 42665616.

The previous prime is 42929143. The next prime is 42929171. The reversal of 42929147 is 74192924.

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 42929147 - 2² = 42929143 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 42929147.

It is not an unprimeable number, because it can be changed into a prime (42929143) 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, 131522 + ... + 131847.

It is an arithmetic number, because the mean of its divisors is an integer number (10798170).

Almost surely, 2^42929147 is an apocalyptic number.

42929147 is a deficient number, since it is larger than the sum of its proper divisors (263533).

42929147 is a wasteful number, since it uses less digits than its factorization.

42929147 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 263532.

The product of its digits is 36288, while the sum is 38.

The square root of 42929147 is about 6552.0338063841. The cubic root of 42929147 is about 350.1472767941.

The spelling of 42929147 in words is "forty-two million, nine hundred twenty-nine thousand, one hundred forty-seven".