42195961 has 4 divisors (see below), whose sum is σ = 44030592. Its totient is φ = 40361332.

The previous prime is 42195919. The next prime is 42195977. The reversal of 42195961 is 16959124.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 42195961 - 2⁷ = 42195833 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 42195961.

It is not an unprimeable number, because it can be changed into a prime (42195661) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 917281 + ... + 917326.

It is an arithmetic number, because the mean of its divisors is an integer number (11007648).

Almost surely, 2^42195961 is an apocalyptic number.

It is an amenable number.

42195961 is a deficient number, since it is larger than the sum of its proper divisors (1834631).

42195961 is a wasteful number, since it uses less digits than its factorization.

42195961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1834630.

The product of its digits is 19440, while the sum is 37.

The square root of 42195961 is about 6495.8418238131. The cubic root of 42195961 is about 348.1424335479.

The spelling of 42195961 in words is "forty-two million, one hundred ninety-five thousand, nine hundred sixty-one".