42012211 has 6 divisors (see below), whose sum is σ = 44253140. Its totient is φ = 39774276.

The previous prime is 42012209. The next prime is 42012221. The reversal of 42012211 is 11221024.

It is a happy number.

It is not a de Polignac number, because 42012211 - 2¹ = 42012209 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 42012191 and 42012200.

It is not an unprimeable number, because it can be changed into a prime (42012221) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 27510 + ... + 28996.

Almost surely, 2^42012211 is an apocalyptic number.

42012211 is a deficient number, since it is larger than the sum of its proper divisors (2240929).

42012211 is an frugal number, since it uses more digits than its factorization.

42012211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2993 (or 1506 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 13.

The square root of 42012211 is about 6481.6827290450. The cubic root of 42012211 is about 347.6363483367.

Adding to 42012211 its reverse (11221024), we get a palindrome (53233235).

The spelling of 42012211 in words is "forty-two million, twelve thousand, two hundred eleven".