42880069 has 4 divisors (see below), whose sum is σ = 45402444. Its totient is φ = 40357696.

The previous prime is 42880063. The next prime is 42880081. The reversal of 42880069 is 96008824.

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

It can be written as a sum of positive squares in 2 ways, for example, as 23184225 + 19695844 = 4815^2 + 4438^2 .

It is a cyclic number.

It is not a de Polignac number, because 42880069 - 2¹¹ = 42878021 is a prime.

It is a super-2 number, since 2×42880069² = 3677400634889522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42880063) 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 3 ways as a sum of consecutive naturals, for example, 1261162 + ... + 1261195.

It is an arithmetic number, because the mean of its divisors is an integer number (11350611).

Almost surely, 2^42880069 is an apocalyptic number.

It is an amenable number.

42880069 is a deficient number, since it is larger than the sum of its proper divisors (2522375).

42880069 is a wasteful number, since it uses less digits than its factorization.

42880069 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2522374.

The product of its (nonzero) digits is 27648, while the sum is 37.

The square root of 42880069 is about 6548.2874860531. The cubic root of 42880069 is about 350.0137926537.

The spelling of 42880069 in words is "forty-two million, eight hundred eighty thousand, sixty-nine".