42825131 has 4 divisors (see below), whose sum is σ = 43736352. Its totient is φ = 41913912.

The previous prime is 42825089. The next prime is 42825137. The reversal of 42825131 is 13152824.

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 42825131 - 2⁶ = 42825067 is a prime.

It is a super-2 number, since 2×42825131² = 3667983690334322, which contains 22 as substring.

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 42825131.

It is not an unprimeable number, because it can be changed into a prime (42825137) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 455540 + ... + 455633.

It is an arithmetic number, because the mean of its divisors is an integer number (10934088).

Almost surely, 2^42825131 is an apocalyptic number.

42825131 is a deficient number, since it is larger than the sum of its proper divisors (911221).

42825131 is an equidigital number, since it uses as much as digits as its factorization.

42825131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 911220.

The product of its digits is 1920, while the sum is 26.

The square root of 42825131 is about 6544.0913043753. The cubic root of 42825131 is about 349.8642493955.

Adding to 42825131 its reverse (13152824), we get a palindrome (55977955).

The spelling of 42825131 in words is "forty-two million, eight hundred twenty-five thousand, one hundred thirty-one".