42290775 has 24 divisors (see below), whose sum is σ = 77690960. Its totient is φ = 22554720.

The previous prime is 42290761. The next prime is 42290777. The reversal of 42290775 is 57709224.

42290775 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 42290775 - 2¹⁷ = 42159703 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42290777) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 30652 + ... + 32001.

Almost surely, 2^42290775 is an apocalyptic number.

42290775 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

42290775 is a deficient number, since it is larger than the sum of its proper divisors (35400185).

42290775 is a wasteful number, since it uses less digits than its factorization.

42290775 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62672 (or 62661 counting only the distinct ones).

The product of its (nonzero) digits is 35280, while the sum is 36.

The square root of 42290775 is about 6503.1357820670. The cubic root of 42290775 is about 348.4029962751.

Adding to 42290775 its reverse (57709224), we get a palindrome (99999999).

The spelling of 42290775 in words is "forty-two million, two hundred ninety thousand, seven hundred seventy-five".