42209294 has 4 divisors (see below), whose sum is σ = 63313944. Its totient is φ = 21104646.

The previous prime is 42209227. The next prime is 42209303. The reversal of 42209294 is 49290224.

It is a semiprime because it is the product of two primes.

It is a super-3 number, since 3×42209294³ (a number of 24 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 42209294.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10552322 + ... + 10552325.

It is an arithmetic number, because the mean of its divisors is an integer number (15828486).

Almost surely, 2^42209294 is an apocalyptic number.

42209294 is a deficient number, since it is larger than the sum of its proper divisors (21104650).

42209294 is a wasteful number, since it uses less digits than its factorization.

42209294 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21104649.

The product of its (nonzero) digits is 10368, while the sum is 32.

The square root of 42209294 is about 6496.8680146668. The cubic root of 42209294 is about 348.1790981491.

The spelling of 42209294 in words is "forty-two million, two hundred nine thousand, two hundred ninety-four".