42212643 has 8 divisors (see below), whose sum is σ = 61400256. Its totient is φ = 25583400.

The previous prime is 42212629. The next prime is 42212689. The reversal of 42212643 is 34621224.

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

It is not a de Polignac number, because 42212643 - 2¹⁰ = 42211619 is a prime.

It is not an unprimeable number, because it can be changed into a prime (42212143) 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, 639553 + ... + 639618.

It is an arithmetic number, because the mean of its divisors is an integer number (7675032).

Almost surely, 2^42212643 is an apocalyptic number.

42212643 is a deficient number, since it is larger than the sum of its proper divisors (19187613).

42212643 is a wasteful number, since it uses less digits than its factorization.

42212643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1279185.

The product of its digits is 2304, while the sum is 24.

The square root of 42212643 is about 6497.1257491294. The cubic root of 42212643 is about 348.1883063973.

Adding to 42212643 its reverse (34621224), we get a palindrome (76833867).

The spelling of 42212643 in words is "forty-two million, two hundred twelve thousand, six hundred forty-three".