421154005 has 16 divisors (see below), whose sum is σ = 536684400. Its totient is φ = 316173312.

The previous prime is 421153991. The next prime is 421154011. The reversal of 421154005 is 500451124.

It can be written as a sum of positive squares in 8 ways, for example, as 111640356 + 309513649 = 10566^2 + 17593^2 .

It is a cyclic number.

It is not a de Polignac number, because 421154005 - 2⁵ = 421153973 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22567 + ... + 36763.

It is an arithmetic number, because the mean of its divisors is an integer number (33542775).

Almost surely, 2^421154005 is an apocalyptic number.

It is an amenable number.

421154005 is a deficient number, since it is larger than the sum of its proper divisors (115530395).

421154005 is a wasteful number, since it uses less digits than its factorization.

421154005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14568.

The product of its (nonzero) digits is 800, while the sum is 22.

The square root of 421154005 is about 20522.0370577582. The cubic root of 421154005 is about 749.5725000751.

The spelling of 421154005 in words is "four hundred twenty-one million, one hundred fifty-four thousand, five".