143031442 has 8 divisors (see below), whose sum is σ = 214599996. Its totient is φ = 71498112.

The previous prime is 143031439. The next prime is 143031461. The reversal of 143031442 is 244130341.

It can be written as a sum of positive squares in 2 ways, for example, as 138791961 + 4239481 = 11781^2 + 2059^2 .

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

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, 7078 + ... + 18334.

Almost surely, 2^143031442 is an apocalyptic number.

143031442 is a deficient number, since it is larger than the sum of its proper divisors (71568554).

143031442 is a wasteful number, since it uses less digits than its factorization.

143031442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17612.

The product of its (nonzero) digits is 1152, while the sum is 22.

The square root of 143031442 is about 11959.5753269086. The cubic root of 143031442 is about 522.9704767836.

Adding to 143031442 its reverse (244130341), we get a palindrome (387161783).

The spelling of 143031442 in words is "one hundred forty-three million, thirty-one thousand, four hundred forty-two".