42242438 has 8 divisors (see below), whose sum is σ = 72415632. Its totient is φ = 18103896.

The previous prime is 42242437. The next prime is 42242471. The reversal of 42242438 is 83424224.

It is a happy number.

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

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 42242438.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42242437) 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, 1508645 + ... + 1508672.

It is an arithmetic number, because the mean of its divisors is an integer number (9051954).

Almost surely, 2^42242438 is an apocalyptic number.

42242438 is a deficient number, since it is larger than the sum of its proper divisors (30173194).

42242438 is a wasteful number, since it uses less digits than its factorization.

42242438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3017326.

The product of its digits is 12288, while the sum is 29.

The square root of 42242438 is about 6499.4182816618. The cubic root of 42242438 is about 348.2702078529.

The spelling of 42242438 in words is "forty-two million, two hundred forty-two thousand, four hundred thirty-eight".