421142011 has 4 divisors (see below), whose sum is σ = 443307400. Its totient is φ = 398976624.

The previous prime is 421141999. The next prime is 421142021. The reversal of 421142011 is 110241124.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 421142011 - 2⁵ = 421141979 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (421142021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11082666 + ... + 11082703.

It is an arithmetic number, because the mean of its divisors is an integer number (110826850).

Almost surely, 2^421142011 is an apocalyptic number.

421142011 is a deficient number, since it is larger than the sum of its proper divisors (22165389).

421142011 is a wasteful number, since it uses less digits than its factorization.

421142011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22165388.

The product of its (nonzero) digits is 64, while the sum is 16.

The square root of 421142011 is about 20521.7448332251. The cubic root of 421142011 is about 749.5653843424.

Adding to 421142011 its reverse (110241124), we get a palindrome (531383135).

The spelling of 421142011 in words is "four hundred twenty-one million, one hundred forty-two thousand, eleven".