406143353420 has 96 divisors (see below), whose sum is σ = 993854510208. Its totient is φ = 136522893312.

The previous prime is 406143353417. The next prime is 406143353423. The reversal of 406143353420 is 24353341604.

It is an interprime number because it is at equal distance from previous prime (406143353417) and next prime (406143353423).

It is a Harshad number since it is a multiple of its sum of digits (35).

It is not an unprimeable number, because it can be changed into a prime (406143353423) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10613762 + ... + 10651958.

It is an arithmetic number, because the mean of its divisors is an integer number (10352651148).

Almost surely, 2^406143353420 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 406143353420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (496927255104).

406143353420 is an abundant number, since it is smaller than the sum of its proper divisors (587711156788).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

406143353420 is a wasteful number, since it uses less digits than its factorization.

406143353420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39699 (or 39697 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 35.

The spelling of 406143353420 in words is "four hundred six billion, one hundred forty-three million, three hundred fifty-three thousand, four hundred twenty".