400142343320 has 16 divisors (see below), whose sum is σ = 900320272560. Its totient is φ = 160056937312.

The previous prime is 400142343269. The next prime is 400142343361. The reversal of 400142343320 is 23343241004.

It is a super-2 number, since 2×400142343320² (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 400142343320.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5001779252 + ... + 5001779331.

It is an arithmetic number, because the mean of its divisors is an integer number (56270017035).

Almost surely, 2^400142343320 is an apocalyptic number.

400142343320 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

400142343320 is an abundant number, since it is smaller than the sum of its proper divisors (500177929240).

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

400142343320 is a wasteful number, since it uses less digits than its factorization.

400142343320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10003558594 (or 10003558590 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 26.

Adding to 400142343320 its reverse (23343241004), we get a palindrome (423485584324).

The spelling of 400142343320 in words is "four hundred billion, one hundred forty-two million, three hundred forty-three thousand, three hundred twenty".