42239249 has 8 divisors (see below), whose sum is σ = 46130112. Its totient is φ = 38440080.

The previous prime is 42239233. The next prime is 42239273. The reversal of 42239249 is 94293224.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 42239249 - 2⁴ = 42239233 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42239149) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21959 + ... + 23804.

It is an arithmetic number, because the mean of its divisors is an integer number (5766264).

Almost surely, 2^42239249 is an apocalyptic number.

It is an amenable number.

42239249 is a deficient number, since it is larger than the sum of its proper divisors (3890863).

42239249 is a wasteful number, since it uses less digits than its factorization.

42239249 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45847.

The product of its digits is 31104, while the sum is 35.

The square root of 42239249 is about 6499.1729473834. The cubic root of 42239249 is about 348.2614436677.

The spelling of 42239249 in words is "forty-two million, two hundred thirty-nine thousand, two hundred forty-nine".