405401143 has 8 divisors (see below), whose sum is σ = 463850912. Its totient is φ = 347085216.

The previous prime is 405401131. The next prime is 405401147. The reversal of 405401143 is 341104504.

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 405401143 - 2¹³ = 405392951 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (405401147) 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, 26880 + ... + 39157.

It is an arithmetic number, because the mean of its divisors is an integer number (57981364).

Almost surely, 2^405401143 is an apocalyptic number.

405401143 is a deficient number, since it is larger than the sum of its proper divisors (58449769).

405401143 is an equidigital number, since it uses as much as digits as its factorization.

405401143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66921.

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 405401143 is about 20134.5758087922. The cubic root of 405401143 is about 740.1078142158.

Adding to 405401143 its reverse (341104504), we get a palindrome (746505647).

The spelling of 405401143 in words is "four hundred five million, four hundred one thousand, one hundred forty-three".