42087215 has 8 divisors (see below), whose sum is σ = 50621328. Its totient is φ = 33592000.

The previous prime is 42087211. The next prime is 42087251. The reversal of 42087215 is 51278024.

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

It is not a de Polignac number, because 42087215 - 2² = 42087211 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 (42087211) 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, 7286 + ... + 11715.

It is an arithmetic number, because the mean of its divisors is an integer number (6327666).

Almost surely, 2^42087215 is an apocalyptic number.

42087215 is a deficient number, since it is larger than the sum of its proper divisors (8534113).

42087215 is a wasteful number, since it uses less digits than its factorization.

42087215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19449.

The product of its (nonzero) digits is 4480, while the sum is 29.

The square root of 42087215 is about 6487.4659922037. The cubic root of 42087215 is about 347.8431026334.

The spelling of 42087215 in words is "forty-two million, eighty-seven thousand, two hundred fifteen".