42612259 has 4 divisors (see below), whose sum is σ = 43986880. Its totient is φ = 41237640.

The previous prime is 42612247. The next prime is 42612289. The reversal of 42612259 is 95221624.

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

It is a cyclic number.

It is not a de Polignac number, because 42612259 - 2²¹ = 40515107 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (31), and also a Moran number because the ratio is a prime number: 1374589 = 42612259 / (4 + 2 + 6 + 1 + 2 + 2 + 5 + 9).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 42612259.

It is not an unprimeable number, because it can be changed into a prime (42612209) 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 3 ways as a sum of consecutive naturals, for example, 687264 + ... + 687325.

It is an arithmetic number, because the mean of its divisors is an integer number (10996720).

Almost surely, 2^42612259 is an apocalyptic number.

42612259 is a deficient number, since it is larger than the sum of its proper divisors (1374621).

42612259 is a wasteful number, since it uses less digits than its factorization.

42612259 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1374620.

The product of its digits is 8640, while the sum is 31.

The square root of 42612259 is about 6527.8065994636. The cubic root of 42612259 is about 349.2835931072.

The spelling of 42612259 in words is "forty-two million, six hundred twelve thousand, two hundred fifty-nine".