42256155 has 8 divisors (see below), whose sum is σ = 67609872. Its totient is φ = 22536608.

The previous prime is 42256153. The next prime is 42256157. The reversal of 42256155 is 55165224.

It is an interprime number because it is at equal distance from previous prime (42256153) and next prime (42256157).

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

It is a cyclic number.

It is not a de Polignac number, because 42256155 - 2¹ = 42256153 is a prime.

It is not an unprimeable number, because it can be changed into a prime (42256153) 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, 1408524 + ... + 1408553.

It is an arithmetic number, because the mean of its divisors is an integer number (8451234).

Almost surely, 2^42256155 is an apocalyptic number.

42256155 is a deficient number, since it is larger than the sum of its proper divisors (25353717).

42256155 is a wasteful number, since it uses less digits than its factorization.

42256155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2817085.

The product of its digits is 12000, while the sum is 30.

The square root of 42256155 is about 6500.4734442962. The cubic root of 42256155 is about 348.3079006382.

The spelling of 42256155 in words is "forty-two million, two hundred fifty-six thousand, one hundred fifty-five".