42550069 has 8 divisors (see below), whose sum is σ = 44465472. Its totient is φ = 40640160.

The previous prime is 42550061. The next prime is 42550121. The reversal of 42550069 is 96005524.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 42550069 - 2³ = 42550061 is a prime.

It is a super-2 number, since 2×42550069² = 3621016743809522, which contains 22 as substring.

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 42550069.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42550061) 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 7 ways as a sum of consecutive naturals, for example, 28977 + ... + 30409.

It is an arithmetic number, because the mean of its divisors is an integer number (5558184).

Almost surely, 2^42550069 is an apocalyptic number.

It is an amenable number.

42550069 is a deficient number, since it is larger than the sum of its proper divisors (1915403).

42550069 is a wasteful number, since it uses less digits than its factorization.

42550069 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2747.

The product of its (nonzero) digits is 10800, while the sum is 31.

The square root of 42550069 is about 6523.0413918662. The cubic root of 42550069 is about 349.1135909918.

The spelling of 42550069 in words is "forty-two million, five hundred fifty thousand, sixty-nine".