42953817 has 24 divisors (see below), whose sum is σ = 60628608. Its totient is φ = 27036960.

The previous prime is 42953809. The next prime is 42953837. The reversal of 42953817 is 71835924.

It is not a de Polignac number, because 42953817 - 2³ = 42953809 is a prime.

It is not an unprimeable number, because it can be changed into a prime (42953837) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 135343 + ... + 135659.

It is an arithmetic number, because the mean of its divisors is an integer number (2526192).

Almost surely, 2^42953817 is an apocalyptic number.

42953817 is a gapful number since it is divisible by the number (47) formed by its first and last digit.

It is an amenable number.

42953817 is a deficient number, since it is larger than the sum of its proper divisors (17674791).

42953817 is a wasteful number, since it uses less digits than its factorization.

42953817 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 429 (or 398 counting only the distinct ones).

The product of its digits is 60480, while the sum is 39.

The square root of 42953817 is about 6553.9161575351. The cubic root of 42953817 is about 350.2143367426.

The spelling of 42953817 in words is "forty-two million, nine hundred fifty-three thousand, eight hundred seventeen".