42198577 has 4 divisors (see below), whose sum is σ = 42228736. Its totient is φ = 42168420.

The previous prime is 42198571. The next prime is 42198623. The reversal of 42198577 is 77589124.

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 42198577 - 2¹¹ = 42196529 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42198571) 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, 12873 + ... + 15814.

It is an arithmetic number, because the mean of its divisors is an integer number (10557184).

Almost surely, 2^42198577 is an apocalyptic number.

It is an amenable number.

42198577 is a deficient number, since it is larger than the sum of its proper divisors (30159).

42198577 is a wasteful number, since it uses less digits than its factorization.

42198577 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30158.

The product of its digits is 141120, while the sum is 43.

The square root of 42198577 is about 6496.0431802752. The cubic root of 42198577 is about 348.1496279315.

The spelling of 42198577 in words is "forty-two million, one hundred ninety-eight thousand, five hundred seventy-seven".