421042067 has 4 divisors (see below), whose sum is σ = 421084440. Its totient is φ = 420999696.

The previous prime is 421042051. The next prime is 421042081. The reversal of 421042067 is 760240124.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 421042067 - 2⁴ = 421042051 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (421042087) 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, 2684 + ... + 29142.

It is an arithmetic number, because the mean of its divisors is an integer number (105271110).

Almost surely, 2^421042067 is an apocalyptic number.

421042067 is a deficient number, since it is larger than the sum of its proper divisors (42373).

421042067 is a wasteful number, since it uses less digits than its factorization.

421042067 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42372.

The product of its (nonzero) digits is 2688, while the sum is 26.

The square root of 421042067 is about 20519.3096131424. The cubic root of 421042067 is about 749.5060848759.

The spelling of 421042067 in words is "four hundred twenty-one million, forty-two thousand, sixty-seven".