42242459 has 12 divisors (see below), whose sum is σ = 49245264. Its totient is φ = 36129744.

The previous prime is 42242437. The next prime is 42242471. The reversal of 42242459 is 95424224.

It is not a de Polignac number, because 42242459 - 2²⁰ = 41193883 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42242479) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 42482 + ... + 43464.

It is an arithmetic number, because the mean of its divisors is an integer number (4103772).

Almost surely, 2^42242459 is an apocalyptic number.

42242459 is a gapful number since it is divisible by the number (49) formed by its first and last digit.

42242459 is a deficient number, since it is larger than the sum of its proper divisors (7002805).

42242459 is an equidigital number, since it uses as much as digits as its factorization.

42242459 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1874 (or 1867 counting only the distinct ones).

The product of its digits is 23040, while the sum is 32.

The square root of 42242459 is about 6499.4198971908. The cubic root of 42242459 is about 348.2702655648.

The spelling of 42242459 in words is "forty-two million, two hundred forty-two thousand, four hundred fifty-nine".