42669811 has 4 divisors (see below), whose sum is σ = 42729232. Its totient is φ = 42610392.

The previous prime is 42669797. The next prime is 42669827. The reversal of 42669811 is 11896624.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 42669811 - 2¹⁵ = 42637043 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42669311) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28620 + ... + 30073.

It is an arithmetic number, because the mean of its divisors is an integer number (10682308).

Almost surely, 2^42669811 is an apocalyptic number.

42669811 is a deficient number, since it is larger than the sum of its proper divisors (59421).

42669811 is an equidigital number, since it uses as much as digits as its factorization.

42669811 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59420.

The product of its digits is 20736, while the sum is 37.

The square root of 42669811 is about 6532.2133308703. The cubic root of 42669811 is about 349.4407695217.

The spelling of 42669811 in words is "forty-two million, six hundred sixty-nine thousand, eight hundred eleven".