42541669 has 8 divisors (see below), whose sum is σ = 43441272. Its totient is φ = 41645760.

The previous prime is 42541657. The next prime is 42541679. The reversal of 42541669 is 96614524.

It can be written as a sum of positive squares in 4 ways, for example, as 3629025 + 38912644 = 1905^2 + 6238^2 .

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 42541669 - 2¹⁵ = 42508901 is a prime.

It is a super-2 number, since 2×42541669² = 3619587202611122, 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 (42541619) 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, 44739 + ... + 45679.

It is an arithmetic number, because the mean of its divisors is an integer number (5430159).

Almost surely, 2^42541669 is an apocalyptic number.

It is an amenable number.

42541669 is a deficient number, since it is larger than the sum of its proper divisors (899603).

42541669 is an equidigital number, since it uses as much as digits as its factorization.

42541669 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1847.

The product of its digits is 51840, while the sum is 37.

The square root of 42541669 is about 6522.3974886540. The cubic root of 42541669 is about 349.0906161199.

The spelling of 42541669 in words is "forty-two million, five hundred forty-one thousand, six hundred sixty-nine".