42281965 has 16 divisors (see below), whose sum is σ = 56114496. Its totient is φ = 30326400.

The previous prime is 42281959. The next prime is 42282007. The reversal of 42281965 is 56918224.

It is not a de Polignac number, because 42281965 - 2³ = 42281957 is a prime.

It is a super-2 number, since 2×42281965² = 3575529128522450, which contains 22 as substring.

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 15 ways as a sum of consecutive naturals, for example, 1251 + ... + 9280.

It is an arithmetic number, because the mean of its divisors is an integer number (3507156).

Almost surely, 2^42281965 is an apocalyptic number.

It is an amenable number.

42281965 is a deficient number, since it is larger than the sum of its proper divisors (13832531).

42281965 is a wasteful number, since it uses less digits than its factorization.

42281965 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10620.

The product of its digits is 34560, while the sum is 37.

The square root of 42281965 is about 6502.4583812586. The cubic root of 42281965 is about 348.3788015300.

The spelling of 42281965 in words is "forty-two million, two hundred eighty-one thousand, nine hundred sixty-five".