42773949 has 12 divisors (see below), whose sum is σ = 63222016. Its totient is φ = 27852552.

The previous prime is 42773933. The next prime is 42773963. The reversal of 42773949 is 94937724.

It is not a de Polignac number, because 42773949 - 2⁴ = 42773933 is a prime.

It is a super-2 number, since 2×42773949² = 3659221426109202, 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 (42773909) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 54877 + ... + 55650.

Almost surely, 2^42773949 is an apocalyptic number.

It is an amenable number.

42773949 is a deficient number, since it is larger than the sum of its proper divisors (20448067).

42773949 is a wasteful number, since it uses less digits than its factorization.

42773949 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110576 (or 110573 counting only the distinct ones).

The product of its digits is 381024, while the sum is 45.

The square root of 42773949 is about 6540.1795846903. The cubic root of 42773949 is about 349.7248149870.

The spelling of 42773949 in words is "forty-two million, seven hundred seventy-three thousand, nine hundred forty-nine".