42256015 has 8 divisors (see below), whose sum is σ = 51095088. Its totient is φ = 33546240.

The previous prime is 42256009. The next prime is 42256021. The reversal of 42256015 is 51065224.

It is an interprime number because it is at equal distance from previous prime (42256009) and next prime (42256021).

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

It is a de Polignac number, because none of the positive numbers 2^k-42256015 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31602 + ... + 32911.

It is an arithmetic number, because the mean of its divisors is an integer number (6386886).

Almost surely, 2^42256015 is an apocalyptic number.

42256015 is a deficient number, since it is larger than the sum of its proper divisors (8839073).

42256015 is a wasteful number, since it uses less digits than its factorization.

42256015 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64649.

The product of its (nonzero) digits is 2400, while the sum is 25.

The square root of 42256015 is about 6500.4626758409. The cubic root of 42256015 is about 348.3075159751.

The spelling of 42256015 in words is "forty-two million, two hundred fifty-six thousand, fifteen".