42243015 has 16 divisors (see below), whose sum is σ = 68287968. Its totient is φ = 22296576.

The previous prime is 42243013. The next prime is 42243017. The reversal of 42243015 is 51034224.

It is an interprime number because it is at equal distance from previous prime (42243013) and next prime (42243017).

It is not a de Polignac number, because 42243015 - 2¹ = 42243013 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 42242982 and 42243000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42243013) 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, 13062 + ... + 15971.

It is an arithmetic number, because the mean of its divisors is an integer number (4267998).

Almost surely, 2^42243015 is an apocalyptic number.

42243015 is a deficient number, since it is larger than the sum of its proper divisors (26044953).

42243015 is a wasteful number, since it uses less digits than its factorization.

42243015 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29138.

The product of its (nonzero) digits is 960, while the sum is 21.

The square root of 42243015 is about 6499.4626700982. The cubic root of 42243015 is about 348.2717935489.

Adding to 42243015 its reverse (51034224), we get a palindrome (93277239).

The spelling of 42243015 in words is "forty-two million, two hundred forty-three thousand, fifteen".