400142313240 has 64 divisors (see below), whose sum is σ = 1252619424000. Its totient is φ = 102065284992.

The previous prime is 400142313211. The next prime is 400142313247. The reversal of 400142313240 is 42313241004.

It is a super-2 number, since 2×400142313240² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 400142313240.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400142313247) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 72486790 + ... + 72492309.

It is an arithmetic number, because the mean of its divisors is an integer number (19572178500).

Almost surely, 2^400142313240 is an apocalyptic number.

400142313240 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

400142313240 is an abundant number, since it is smaller than the sum of its proper divisors (852477110760).

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

400142313240 is a wasteful number, since it uses less digits than its factorization.

400142313240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 144979136 (or 144979132 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 24.

Adding to 400142313240 its reverse (42313241004), we get a palindrome (442455554244).

The spelling of 400142313240 in words is "four hundred billion, one hundred forty-two million, three hundred thirteen thousand, two hundred forty".