42820601 has 4 divisors (see below), whose sum is σ = 42908304. Its totient is φ = 42732900.

The previous prime is 42820573. The next prime is 42820627. The reversal of 42820601 is 10602824.

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 42820601 - 2⁶ = 42820537 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42820301) 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, 43115 + ... + 44096.

It is an arithmetic number, because the mean of its divisors is an integer number (10727076).

Almost surely, 2^42820601 is an apocalyptic number.

It is an amenable number.

42820601 is a deficient number, since it is larger than the sum of its proper divisors (87703).

42820601 is an equidigital number, since it uses as much as digits as its factorization.

42820601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87702.

The product of its (nonzero) digits is 768, while the sum is 23.

The square root of 42820601 is about 6543.7451814691. The cubic root of 42820601 is about 349.8519128625.

The spelling of 42820601 in words is "forty-two million, eight hundred twenty thousand, six hundred one".