42810401 has 4 divisors (see below), whose sum is σ = 45063600. Its totient is φ = 40557204.

The previous prime is 42810377. The next prime is 42810421. The reversal of 42810401 is 10401824.

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 a de Polignac number, because none of the positive numbers 2^k-42810401 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42810421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1126571 + ... + 1126608.

It is an arithmetic number, because the mean of its divisors is an integer number (11265900).

Almost surely, 2^42810401 is an apocalyptic number.

It is an amenable number.

42810401 is a deficient number, since it is larger than the sum of its proper divisors (2253199).

42810401 is a wasteful number, since it uses less digits than its factorization.

42810401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2253198.

The product of its (nonzero) digits is 256, while the sum is 20.

The square root of 42810401 is about 6542.9657648501. The cubic root of 42810401 is about 349.8241320529.

The spelling of 42810401 in words is "forty-two million, eight hundred ten thousand, four hundred one".