42265644 has 24 divisors (see below), whose sum is σ = 102021360. Its totient is φ = 13602624.

The previous prime is 42265637. The next prime is 42265669. The reversal of 42265644 is 44656224.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 60379 + ... + 61074.

It is an arithmetic number, because the mean of its divisors is an integer number (4250890).

Almost surely, 2^42265644 is an apocalyptic number.

It is an amenable number.

42265644 is an abundant number, since it is smaller than the sum of its proper divisors (59755716).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

42265644 is a wasteful number, since it uses less digits than its factorization.

42265644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121489 (or 121487 counting only the distinct ones).

The product of its digits is 46080, while the sum is 33.

The square root of 42265644 is about 6501.2032732410. The cubic root of 42265644 is about 348.3339705785. Note that the first 3 decimals are identical.

It can be divided in two parts, 4226 and 5644, that added together give a triangular number (9870 = T₁₄₀).

The spelling of 42265644 in words is "forty-two million, two hundred sixty-five thousand, six hundred forty-four".