42256415 has 8 divisors (see below), whose sum is σ = 51402768. Its totient is φ = 33341760.

The previous prime is 42256397. The next prime is 42256421. The reversal of 42256415 is 51465224.

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

It is not a de Polignac number, because 42256415 - 2¹⁴ = 42240031 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 57521 + ... + 58250.

It is an arithmetic number, because the mean of its divisors is an integer number (6425346).

Almost surely, 2^42256415 is an apocalyptic number.

42256415 is a deficient number, since it is larger than the sum of its proper divisors (9146353).

42256415 is a wasteful number, since it uses less digits than its factorization.

42256415 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115849.

The product of its digits is 9600, while the sum is 29.

The square root of 42256415 is about 6500.4934428088. The cubic root of 42256415 is about 348.3086150105.

The spelling of 42256415 in words is "forty-two million, two hundred fifty-six thousand, four hundred fifteen".