402143000 has 192 divisors, whose sum is σ = 1136397600. Its totient is φ = 132652800.

The previous prime is 402142991. The next prime is 402143023. The reversal of 402143000 is 341204.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1420859 + ... + 1421141.

Almost surely, 2^402143000 is an apocalyptic number.

402143000 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 402143000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (568198800).

402143000 is an abundant number, since it is smaller than the sum of its proper divisors (734254600).

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

402143000 is a wasteful number, since it uses less digits than its factorization.

402143000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 347 (or 326 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 14.

The square root of 402143000 is about 20053.5034345623. The cubic root of 402143000 is about 738.1197701243.

Adding to 402143000 its reverse (341204), we get a palindrome (402484204).

The spelling of 402143000 in words is "four hundred two million, one hundred forty-three thousand".