42720195 has 16 divisors (see below), whose sum is σ = 78117120. Its totient is φ = 19529184.

The previous prime is 42720193. The next prime is 42720217. The reversal of 42720195 is 59102724.

It is not a de Polignac number, because 42720195 - 2¹ = 42720193 is a prime.

It is not an unprimeable number, because it can be changed into a prime (42720193) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 203325 + ... + 203534.

It is an arithmetic number, because the mean of its divisors is an integer number (4882320).

Almost surely, 2^42720195 is an apocalyptic number.

42720195 is a deficient number, since it is larger than the sum of its proper divisors (35396925).

42720195 is a wasteful number, since it uses less digits than its factorization.

42720195 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 406874.

The product of its (nonzero) digits is 5040, while the sum is 30.

The square root of 42720195 is about 6536.0687725880. The cubic root of 42720195 is about 349.5782539096.

The spelling of 42720195 in words is "forty-two million, seven hundred twenty thousand, one hundred ninety-five".