143217472 has 14 divisors (see below), whose sum is σ = 284197298. Its totient is φ = 71608704.

The previous prime is 143217449. The next prime is 143217479. The reversal of 143217472 is 274712341.

It can be written as a sum of positive squares in only one way, i.e., 85821696 + 57395776 = 9264^2 + 7576^2 .

It is a super-2 number, since 2×143217472² = 41022488572141568, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (143217479) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1118823 + ... + 1118950.

It is an arithmetic number, because the mean of its divisors is an integer number (20299807).

Almost surely, 2^143217472 is an apocalyptic number.

It is an amenable number.

143217472 is a deficient number, since it is larger than the sum of its proper divisors (140979826).

143217472 is an equidigital number, since it uses as much as digits as its factorization.

143217472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2237785 (or 2237775 counting only the distinct ones).

The product of its digits is 9408, while the sum is 31.

The square root of 143217472 is about 11967.3502497420. The cubic root of 143217472 is about 523.1971077222.

The spelling of 143217472 in words is "one hundred forty-three million, two hundred seventeen thousand, four hundred seventy-two".