42827949 has 6 divisors (see below), whose sum is σ = 61862606. Its totient is φ = 28551960.

The previous prime is 42827933. The next prime is 42827969. The reversal of 42827949 is 94972824.

It can be written as a sum of positive squares in only one way, i.e., 41602500 + 1225449 = 6450^2 + 1107^2 .

It is not a de Polignac number, because 42827949 - 2⁴ = 42827933 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 (42827969) 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, 2379322 + ... + 2379339.

Almost surely, 2^42827949 is an apocalyptic number.

It is an amenable number.

42827949 is a deficient number, since it is larger than the sum of its proper divisors (19034657).

42827949 is a wasteful number, since it uses less digits than its factorization.

42827949 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4758667 (or 4758664 counting only the distinct ones).

The product of its digits is 290304, while the sum is 45.

The square root of 42827949 is about 6544.3066095653. The cubic root of 42827949 is about 349.8719232061.

The spelling of 42827949 in words is "forty-two million, eight hundred twenty-seven thousand, nine hundred forty-nine".