42820106 has 8 divisors (see below), whose sum is σ = 73405920. Its totient is φ = 18351468.

The previous prime is 42820103. The next prime is 42820111. The reversal of 42820106 is 60102824.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×42820106² = 3667122955702472, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (42820103) 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, 1529276 + ... + 1529303.

It is an arithmetic number, because the mean of its divisors is an integer number (9175740).

Almost surely, 2^42820106 is an apocalyptic number.

42820106 is a deficient number, since it is larger than the sum of its proper divisors (30585814).

42820106 is a wasteful number, since it uses less digits than its factorization.

42820106 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3058588.

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

The square root of 42820106 is about 6543.7073589824. The cubic root of 42820106 is about 349.8505647780.

The spelling of 42820106 in words is "forty-two million, eight hundred twenty thousand, one hundred six".