421623167 has 8 divisors (see below), whose sum is σ = 507216000. Its totient is φ = 342370584.

The previous prime is 421623133. The next prime is 421623197. The reversal of 421623167 is 761326124.

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 421623167 - 2¹⁰ = 421622143 is a prime.

It is a super-2 number, since 2×421623167² = 355532189902219778, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421623197) 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 7 ways as a sum of consecutive naturals, for example, 1584917 + ... + 1585182.

It is an arithmetic number, because the mean of its divisors is an integer number (63402000).

Almost surely, 2^421623167 is an apocalyptic number.

421623167 is a deficient number, since it is larger than the sum of its proper divisors (85592833).

421623167 is a wasteful number, since it uses less digits than its factorization.

421623167 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3170125.

The product of its digits is 12096, while the sum is 32.

The square root of 421623167 is about 20533.4645639746. The cubic root of 421623167 is about 749.8507359252.

The spelling of 421623167 in words is "four hundred twenty-one million, six hundred twenty-three thousand, one hundred sixty-seven".