42745215 has 8 divisors (see below), whose sum is σ = 68392368. Its totient is φ = 22797440.

The previous prime is 42745211. The next prime is 42745237. The reversal of 42745215 is 51254724.

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

It is not a de Polignac number, because 42745215 - 2² = 42745211 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42745211) 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, 1424826 + ... + 1424855.

It is an arithmetic number, because the mean of its divisors is an integer number (8549046).

Almost surely, 2^42745215 is an apocalyptic number.

42745215 is a deficient number, since it is larger than the sum of its proper divisors (25647153).

42745215 is a wasteful number, since it uses less digits than its factorization.

42745215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2849689.

The product of its digits is 11200, while the sum is 30.

The square root of 42745215 is about 6537.9824869756. The cubic root of 42745215 is about 349.6464865956.

Adding to 42745215 its reverse (51254724), we get a palindrome (93999939).

The spelling of 42745215 in words is "forty-two million, seven hundred forty-five thousand, two hundred fifteen".