42669081 has 48 divisors (see below), whose sum is σ = 77366016. Its totient is φ = 22059648.

The previous prime is 42669047. The next prime is 42669097. The reversal of 42669081 is 18096624.

It is not a de Polignac number, because 42669081 - 2¹⁴ = 42652697 is a prime.

It is a super-2 number, since 2×42669081² = 3641300946769122, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (42669281) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 42916 + ... + 43898.

It is an arithmetic number, because the mean of its divisors is an integer number (1611792).

Almost surely, 2^42669081 is an apocalyptic number.

It is an amenable number.

42669081 is a deficient number, since it is larger than the sum of its proper divisors (34696935).

42669081 is a wasteful number, since it uses less digits than its factorization.

42669081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1062 (or 1059 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 36.

The square root of 42669081 is about 6532.1574537055. The cubic root of 42669081 is about 349.4387767528.

The spelling of 42669081 in words is "forty-two million, six hundred sixty-nine thousand, eighty-one".