42169069 has 4 divisors (see below), whose sum is σ = 42296800. Its totient is φ = 42041340.

The previous prime is 42169067. The next prime is 42169073. The reversal of 42169069 is 96096124.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 42169069 - 2¹ = 42169067 is a prime.

It is a super-2 number, since 2×42169069² = 3556460760653522, 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 (42169067) 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, 63369 + ... + 64030.

It is an arithmetic number, because the mean of its divisors is an integer number (10574200).

Almost surely, 2^42169069 is an apocalyptic number.

It is an amenable number.

42169069 is a deficient number, since it is larger than the sum of its proper divisors (127731).

42169069 is a wasteful number, since it uses less digits than its factorization.

42169069 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127730.

The product of its (nonzero) digits is 23328, while the sum is 37.

The square root of 42169069 is about 6493.7715543434. The cubic root of 42169069 is about 348.0684593594.

The spelling of 42169069 in words is "forty-two million, one hundred sixty-nine thousand, sixty-nine".