42623017 has 4 divisors (see below), whose sum is σ = 42638596. Its totient is φ = 42607440.

The previous prime is 42622999. The next prime is 42623027. The reversal of 42623017 is 71032624.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 6370576 + 36252441 = 2524^2 + 6021^2 .

It is a cyclic number.

It is not a de Polignac number, because 42623017 - 2⁷ = 42622889 is a prime.

It is a super-3 number, since 3×42623017³ (a number of 24 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 42622982 and 42623000.

It is not an unprimeable number, because it can be changed into a prime (42623027) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2478 + ... + 9559.

It is an arithmetic number, because the mean of its divisors is an integer number (10659649).

It is a Poulet number, since it divides 2^42623016-1.

Almost surely, 2^42623017 is an apocalyptic number.

It is an amenable number.

42623017 is a deficient number, since it is larger than the sum of its proper divisors (15579).

42623017 is a wasteful number, since it uses less digits than its factorization.

42623017 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15578.

The product of its (nonzero) digits is 2016, while the sum is 25.

The square root of 42623017 is about 6528.6305608451. The cubic root of 42623017 is about 349.3129843107.

The spelling of 42623017 in words is "forty-two million, six hundred twenty-three thousand, seventeen".