42180895 has 4 divisors (see below), whose sum is σ = 50617080. Its totient is φ = 33744712.

The previous prime is 42180889. The next prime is 42180907. The reversal of 42180895 is 59808124.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42180895 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4218085 + ... + 4218094.

It is an arithmetic number, because the mean of its divisors is an integer number (12654270).

Almost surely, 2^42180895 is an apocalyptic number.

42180895 is a deficient number, since it is larger than the sum of its proper divisors (8436185).

42180895 is an equidigital number, since it uses as much as digits as its factorization.

42180895 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8436184.

The product of its (nonzero) digits is 23040, while the sum is 37.

The square root of 42180895 is about 6494.6820553434. The cubic root of 42180895 is about 348.1009940502.

The spelling of 42180895 in words is "forty-two million, one hundred eighty thousand, eight hundred ninety-five".