42995231 has 4 divisors (see below), whose sum is σ = 43041864. Its totient is φ = 42948600.

The previous prime is 42995213. The next prime is 42995269. The reversal of 42995231 is 13259924.

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 42995231 - 2⁶ = 42995167 is a prime.

It is a super-2 number, since 2×42995231² = 3697179777486722, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 42995191 and 42995200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42995201) 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, 21905 + ... + 23786.

It is an arithmetic number, because the mean of its divisors is an integer number (10760466).

Almost surely, 2^42995231 is an apocalyptic number.

42995231 is a deficient number, since it is larger than the sum of its proper divisors (46633).

42995231 is an equidigital number, since it uses as much as digits as its factorization.

42995231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46632.

The product of its digits is 19440, while the sum is 35.

The square root of 42995231 is about 6557.0748813781. The cubic root of 42995231 is about 350.3268538503.

The spelling of 42995231 in words is "forty-two million, nine hundred ninety-five thousand, two hundred thirty-one".