42009167 has 4 divisors (see below), whose sum is σ = 42022536. Its totient is φ = 41995800.

The previous prime is 42009131. The next prime is 42009169. The reversal of 42009167 is 76190024.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 42009167 - 2¹² = 42005071 is a prime.

It is a super-2 number, since 2×42009167² = 3529540224067778, 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 (42009169) 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, 893 + ... + 9209.

It is an arithmetic number, because the mean of its divisors is an integer number (10505634).

Almost surely, 2^42009167 is an apocalyptic number.

42009167 is a deficient number, since it is larger than the sum of its proper divisors (13369).

42009167 is an equidigital number, since it uses as much as digits as its factorization.

42009167 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13368.

The product of its (nonzero) digits is 3024, while the sum is 29.

The square root of 42009167 is about 6481.4479092252. The cubic root of 42009167 is about 347.6279521222.

The spelling of 42009167 in words is "forty-two million, nine thousand, one hundred sixty-seven".