42994169 has 4 divisors (see below), whose sum is σ = 45257040. Its totient is φ = 40731300.

The previous prime is 42994163. The next prime is 42994181. The reversal of 42994169 is 96149924.

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 42994169 - 2⁸ = 42993913 is a prime.

It is a super-2 number, since 2×42994169² = 3696997136001122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42994163) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1131407 + ... + 1131444.

It is an arithmetic number, because the mean of its divisors is an integer number (11314260).

Almost surely, 2^42994169 is an apocalyptic number.

It is an amenable number.

42994169 is a deficient number, since it is larger than the sum of its proper divisors (2262871).

42994169 is a wasteful number, since it uses less digits than its factorization.

42994169 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2262870.

The product of its digits is 139968, while the sum is 44.

The square root of 42994169 is about 6556.9938996464. The cubic root of 42994169 is about 350.3239694204.

The spelling of 42994169 in words is "forty-two million, nine hundred ninety-four thousand, one hundred sixty-nine".