42197759 has 4 divisors (see below), whose sum is σ = 42501480. Its totient is φ = 41894040.

The previous prime is 42197737. The next prime is 42197767. The reversal of 42197759 is 95779124.

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-42197759 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42197719) 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, 151652 + ... + 151929.

It is an arithmetic number, because the mean of its divisors is an integer number (10625370).

Almost surely, 2^42197759 is an apocalyptic number.

42197759 is a deficient number, since it is larger than the sum of its proper divisors (303721).

42197759 is a wasteful number, since it uses less digits than its factorization.

42197759 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 303720.

The product of its digits is 158760, while the sum is 44.

The square root of 42197759 is about 6495.9802185659. The cubic root of 42197759 is about 348.1473783435.

The spelling of 42197759 in words is "forty-two million, one hundred ninety-seven thousand, seven hundred fifty-nine".