421967 has 8 divisors (see below), whose sum is σ = 519456. Its totient is φ = 333792.

The previous prime is 421943. The next prime is 421973. The reversal of 421967 is 769124.

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

It is a cyclic number.

It is not a de Polignac number, because 421967 - 2⁸ = 421711 is a prime.

It is a super-2 number, since 2×421967² = 356112298178, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421907) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2228 + ... + 2409.

It is an arithmetic number, because the mean of its divisors is an integer number (64932).

421967 is a Friedman number, since it can be written as 94*67^2+1, using all its digits and the basic arithmetic operations.

2⁴²¹⁹⁶⁷ is an apocalyptic number.

421967 is a deficient number, since it is larger than the sum of its proper divisors (97489).

421967 is a wasteful number, since it uses less digits than its factorization.

421967 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4657.

The product of its digits is 3024, while the sum is 29.

The square root of 421967 is about 649.5898706107. The cubic root of 421967 is about 75.0054514556.

The spelling of 421967 in words is "four hundred twenty-one thousand, nine hundred sixty-seven".