401424321 has 8 divisors (see below), whose sum is σ = 546620544. Its totient is φ = 261922160.

The previous prime is 401424319. The next prime is 401424323. The reversal of 401424321 is 123424104.

It is an interprime number because it is at equal distance from previous prime (401424319) and next prime (401424323).

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 401424321 - 2¹ = 401424319 is a prime.

It is a super-2 number, since 2×401424321² = 322282970980622082, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (401424323) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1423350 + ... + 1423631.

It is an arithmetic number, because the mean of its divisors is an integer number (68327568).

Almost surely, 2^401424321 is an apocalyptic number.

It is an amenable number.

401424321 is a deficient number, since it is larger than the sum of its proper divisors (145196223).

401424321 is a wasteful number, since it uses less digits than its factorization.

401424321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2847031.

The product of its (nonzero) digits is 768, while the sum is 21.

The square root of 401424321 is about 20035.5763830243. The cubic root of 401424321 is about 737.6798043259.

Adding to 401424321 its reverse (123424104), we get a palindrome (524848425).

The spelling of 401424321 in words is "four hundred one million, four hundred twenty-four thousand, three hundred twenty-one".