143221162440 has 64 divisors (see below), whose sum is σ = 429870706560. Its totient is φ = 38173890560.

The previous prime is 143221162439. The next prime is 143221162477. The reversal of 143221162440 is 44261122341.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 143221162398 and 143221162407.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 37044 + ... + 536483.

It is an arithmetic number, because the mean of its divisors is an integer number (6716729790).

Almost surely, 2^143221162440 is an apocalyptic number.

143221162440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

143221162440 is an abundant number, since it is smaller than the sum of its proper divisors (286649544120).

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

143221162440 is a wasteful number, since it uses less digits than its factorization.

143221162440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 575622 (or 575618 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 30.

Adding to 143221162440 its reverse (44261122341), we get a palindrome (187482284781).

The spelling of 143221162440 in words is "one hundred forty-three billion, two hundred twenty-one million, one hundred sixty-two thousand, four hundred forty".