42286881 has 16 divisors (see below), whose sum is σ = 69394304. Its totient is φ = 22305024.

The previous prime is 42286873. The next prime is 42286889. The reversal of 42286881 is 18868224.

It is an interprime number because it is at equal distance from previous prime (42286873) and next prime (42286889).

It is not a de Polignac number, because 42286881 - 2³ = 42286873 is a prime.

It is a super-2 number, since 2×42286881² = 3576360609416322, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is not an unprimeable number, because it can be changed into a prime (42286889) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 77176 + ... + 77721.

It is an arithmetic number, because the mean of its divisors is an integer number (4337144).

Almost surely, 2^42286881 is an apocalyptic number.

It is an amenable number.

42286881 is a deficient number, since it is larger than the sum of its proper divisors (27107423).

42286881 is a wasteful number, since it uses less digits than its factorization.

42286881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 154920.

The product of its digits is 49152, while the sum is 39.

The square root of 42286881 is about 6502.8363811494. The cubic root of 42286881 is about 348.3923026671.

The spelling of 42286881 in words is "forty-two million, two hundred eighty-six thousand, eight hundred eighty-one".