42212434 has 8 divisors (see below), whose sum is σ = 69074928. Its totient is φ = 19187460.

The previous prime is 42212431. The next prime is 42212441. The reversal of 42212434 is 43421224.

It is a happy number.

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

It is a Harshad number since it is a multiple of its sum of digits (22), and also a Moran number because the ratio is a prime number: 1918747 = 42212434 / (4 + 2 + 2 + 1 + 2 + 4 + 3 + 4).

It is not an unprimeable number, because it can be changed into a prime (42212431) 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, 959352 + ... + 959395.

It is an arithmetic number, because the mean of its divisors is an integer number (8634366).

Almost surely, 2^42212434 is an apocalyptic number.

42212434 is a deficient number, since it is larger than the sum of its proper divisors (26862494).

42212434 is a wasteful number, since it uses less digits than its factorization.

42212434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1918760.

The product of its digits is 1536, while the sum is 22.

The square root of 42212434 is about 6497.1096650742. The cubic root of 42212434 is about 348.1877317553.

Adding to 42212434 its reverse (43421224), we get a palindrome (85633658).

The spelling of 42212434 in words is "forty-two million, two hundred twelve thousand, four hundred thirty-four".