42845949 has 8 divisors (see below), whose sum is σ = 63475520. Its totient is φ = 28563948.

The previous prime is 42845947. The next prime is 42845953. The reversal of 42845949 is 94954824.

It is not a de Polignac number, because 42845949 - 2¹ = 42845947 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42845947) 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, 793417 + ... + 793470.

It is an arithmetic number, because the mean of its divisors is an integer number (7934440).

Almost surely, 2^42845949 is an apocalyptic number.

It is an amenable number.

42845949 is a deficient number, since it is larger than the sum of its proper divisors (20629571).

42845949 is a wasteful number, since it uses less digits than its factorization.

42845949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1586896 (or 1586890 counting only the distinct ones).

The product of its digits is 414720, while the sum is 45.

The square root of 42845949 is about 6545.6817062854. The cubic root of 42845949 is about 349.9209317990.

The spelling of 42845949 in words is "forty-two million, eight hundred forty-five thousand, nine hundred forty-nine".