42049625 has 8 divisors (see below), whose sum is σ = 52478088. Its totient is φ = 33639600.

The previous prime is 42049613. The next prime is 42049627. The reversal of 42049625 is 52694024.

It can be written as a sum of positive squares in 4 ways, for example, as 614656 + 41434969 = 784^2 + 6437^2 .

It is not a de Polignac number, because 42049625 - 2⁶ = 42049561 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 42049591 and 42049600.

It is not an unprimeable number, because it can be changed into a prime (42049627) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 168074 + ... + 168323.

It is an arithmetic number, because the mean of its divisors is an integer number (6559761).

Almost surely, 2^42049625 is an apocalyptic number.

It is an amenable number.

42049625 is a deficient number, since it is larger than the sum of its proper divisors (10428463).

42049625 is an equidigital number, since it uses as much as digits as its factorization.

42049625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 336412 (or 336402 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 32.

The square root of 42049625 is about 6484.5682200128. The cubic root of 42049625 is about 347.7395136384.

The spelling of 42049625 in words is "forty-two million, forty-nine thousand, six hundred twenty-five".