42051395 has 4 divisors (see below), whose sum is σ = 50461680. Its totient is φ = 33641112.

The previous prime is 42051391. The next prime is 42051403. The reversal of 42051395 is 59315024.

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

It is a cyclic number.

It is not a de Polignac number, because 42051395 - 2² = 42051391 is a prime.

It is not an unprimeable number, because it can be changed into a prime (42051391) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4205135 + ... + 4205144.

It is an arithmetic number, because the mean of its divisors is an integer number (12615420).

Almost surely, 2^42051395 is an apocalyptic number.

42051395 is a deficient number, since it is larger than the sum of its proper divisors (8410285).

42051395 is an equidigital number, since it uses as much as digits as its factorization.

42051395 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8410284.

The product of its (nonzero) digits is 5400, while the sum is 29.

The square root of 42051395 is about 6484.7046964376. The cubic root of 42051395 is about 347.7443927172.

It can be divided in two parts, 420 and 51395, that added together give a palindrome (51815).

The spelling of 42051395 in words is "forty-two million, fifty-one thousand, three hundred ninety-five".