42290169 has 32 divisors (see below), whose sum is σ = 64364544. Its totient is φ = 24541440.

The previous prime is 42290167. The next prime is 42290173. The reversal of 42290169 is 96109224.

It is not a de Polignac number, because 42290169 - 2¹ = 42290167 is a prime.

It is a super-2 number, since 2×42290169² = 3576916788097122, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (42290161) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 35782 + ... + 36944.

It is an arithmetic number, because the mean of its divisors is an integer number (2011392).

Almost surely, 2^42290169 is an apocalyptic number.

It is an amenable number.

42290169 is a deficient number, since it is larger than the sum of its proper divisors (22074375).

42290169 is a wasteful number, since it uses less digits than its factorization.

42290169 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1237.

The product of its (nonzero) digits is 7776, while the sum is 33.

The square root of 42290169 is about 6503.0891889932. The cubic root of 42290169 is about 348.4013321358.

The spelling of 42290169 in words is "forty-two million, two hundred ninety thousand, one hundred sixty-nine".