42253605 has 12 divisors (see below), whose sum is σ = 73239660. Its totient is φ = 22535232.

The previous prime is 42253597. The next prime is 42253613. The reversal of 42253605 is 50635224.

42253605 is a `hidden beast` number, since 4 + 2 + 2 + 53 + 605 = 666.

It is an interprime number because it is at equal distance from previous prime (42253597) and next prime (42253613).

It can be written as a sum of positive squares in 2 ways, for example, as 30536676 + 11716929 = 5526^2 + 3423^2 .

It is not a de Polignac number, because 42253605 - 2³ = 42253597 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 469440 + ... + 469529.

It is an arithmetic number, because the mean of its divisors is an integer number (6103305).

Almost surely, 2^42253605 is an apocalyptic number.

42253605 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

42253605 is a deficient number, since it is larger than the sum of its proper divisors (30986055).

42253605 is a wasteful number, since it uses less digits than its factorization.

42253605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 938980 (or 938977 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 27.

The square root of 42253605 is about 6500.2773017772. The cubic root of 42253605 is about 348.3008941401.

Adding to 42253605 its reverse (50635224), we get a palindrome (92888829).

The spelling of 42253605 in words is "forty-two million, two hundred fifty-three thousand, six hundred five".