42210015 has 8 divisors (see below), whose sum is σ = 67536048. Its totient is φ = 22512000.

The previous prime is 42210013. The next prime is 42210019. The reversal of 42210015 is 51001224.

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

It is not a de Polignac number, because 42210015 - 2¹ = 42210013 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (15), and also a Moran number because the ratio is a prime number: 2814001 = 42210015 / (4 + 2 + 2 + 1 + 0 + 0 + 1 + 5).

It is a junction number, because it is equal to n+sod(n) for n = 42209976 and 42210003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42210013) 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, 1406986 + ... + 1407015.

It is an arithmetic number, because the mean of its divisors is an integer number (8442006).

Almost surely, 2^42210015 is an apocalyptic number.

42210015 is a deficient number, since it is larger than the sum of its proper divisors (25326033).

42210015 is a wasteful number, since it uses less digits than its factorization.

42210015 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2814009.

The product of its (nonzero) digits is 80, while the sum is 15.

The square root of 42210015 is about 6496.9235027050. The cubic root of 42210015 is about 348.1810806169.

Adding to 42210015 its reverse (51001224), we get a palindrome (93211239).

The spelling of 42210015 in words is "forty-two million, two hundred ten thousand, fifteen".