400000143000 has 128 divisors (see below), whose sum is σ = 1248339456000. Its totient is φ = 106637731200.

The previous prime is 400000142987. The next prime is 400000143013. The reversal of 400000143000 is 341000004.

It is an interprime number because it is at equal distance from previous prime (400000142987) and next prime (400000143013).

It is a super-2 number, since 2×400000143000² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 12460971 + ... + 12493029.

It is an arithmetic number, because the mean of its divisors is an integer number (9752652000).

Almost surely, 2^400000143000 is an apocalyptic number.

400000143000 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 400000143000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (624169728000).

400000143000 is an abundant number, since it is smaller than the sum of its proper divisors (848339313000).

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

400000143000 is a wasteful number, since it uses less digits than its factorization.

400000143000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36242 (or 36228 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 12.

Adding to 400000143000 its reverse (341000004), we get a palindrome (400341143004).

The spelling of 400000143000 in words is "four hundred billion, one hundred forty-three thousand".