143024921 has 8 divisors (see below), whose sum is σ = 154150920. Its totient is φ = 131916672.

The previous prime is 143024881. The next prime is 143024939. The reversal of 143024921 is 129420341.

It can be written as a sum of positive squares in 4 ways, for example, as 53816896 + 89208025 = 7336^2 + 9445^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 143024921 - 2¹⁰ = 143023897 is a prime.

It is a super-2 number, since 2×143024921² = 40912256054112482, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (143024941) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15725 + ... + 23093.

It is an arithmetic number, because the mean of its divisors is an integer number (19268865).

Almost surely, 2^143024921 is an apocalyptic number.

It is an amenable number.

143024921 is a deficient number, since it is larger than the sum of its proper divisors (11125999).

143024921 is a wasteful number, since it uses less digits than its factorization.

143024921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8875.

The product of its (nonzero) digits is 1728, while the sum is 26.

The square root of 143024921 is about 11959.3026970639. The cubic root of 143024921 is about 522.9625290153.

The spelling of 143024921 in words is "one hundred forty-three million, twenty-four thousand, nine hundred twenty-one".