42869825 has 6 divisors (see below), whose sum is σ = 53158614. Its totient is φ = 34295840.

The previous prime is 42869821. The next prime is 42869837. The reversal of 42869825 is 52896824.

It can be written as a sum of positive squares in 3 ways, for example, as 4330561 + 38539264 = 2081^2 + 6208^2 .

It is not a de Polignac number, because 42869825 - 2² = 42869821 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42869821) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 857372 + ... + 857421.

It is an arithmetic number, because the mean of its divisors is an integer number (8859769).

Almost surely, 2^42869825 is an apocalyptic number.

It is an amenable number.

42869825 is a deficient number, since it is larger than the sum of its proper divisors (10288789).

42869825 is a wasteful number, since it uses less digits than its factorization.

42869825 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1714803 (or 1714798 counting only the distinct ones).

The product of its digits is 276480, while the sum is 44.

The square root of 42869825 is about 6547.5052500934. The cubic root of 42869825 is about 349.9859178008.

The spelling of 42869825 in words is "forty-two million, eight hundred sixty-nine thousand, eight hundred twenty-five".