42390895 has 8 divisors (see below), whose sum is σ = 52623360. Its totient is φ = 32743200.

The previous prime is 42390889. The next prime is 42390917. The reversal of 42390895 is 59809324.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 42390895 - 2¹⁷ = 42259823 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 146031 + ... + 146320.

It is an arithmetic number, because the mean of its divisors is an integer number (6577920).

Almost surely, 2^42390895 is an apocalyptic number.

42390895 is a deficient number, since it is larger than the sum of its proper divisors (10232465).

42390895 is a wasteful number, since it uses less digits than its factorization.

42390895 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 292385.

The product of its (nonzero) digits is 77760, while the sum is 40.

The square root of 42390895 is about 6510.8290562723. The cubic root of 42390895 is about 348.6777182625.

The spelling of 42390895 in words is "forty-two million, three hundred ninety thousand, eight hundred ninety-five".