42115213 has 16 divisors (see below), whose sum is σ = 49904640. Its totient is φ = 34788096.

The previous prime is 42115207. The next prime is 42115217. The reversal of 42115213 is 31251124.

It is not a de Polignac number, because 42115213 - 2²¹ = 40018061 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42115217) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28548 + ... + 29986.

It is an arithmetic number, because the mean of its divisors is an integer number (3119040).

Almost surely, 2^42115213 is an apocalyptic number.

It is an amenable number.

42115213 is a deficient number, since it is larger than the sum of its proper divisors (7789427).

42115213 is a wasteful number, since it uses less digits than its factorization.

42115213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1596.

The product of its digits is 240, while the sum is 19.

The square root of 42115213 is about 6489.6234867672. The cubic root of 42115213 is about 347.9202183119.

Adding to 42115213 its reverse (31251124), we get a palindrome (73366337).

The spelling of 42115213 in words is "forty-two million, one hundred fifteen thousand, two hundred thirteen".