1000143442 has 4 divisors (see below), whose sum is σ = 1500215166. Its totient is φ = 500071720.

The previous prime is 1000143433. The next prime is 1000143481. The reversal of 1000143442 is 2443410001.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2443410001 = 32561 ⋅75041.

It can be written as a sum of positive squares in only one way, i.e., 811053441 + 189090001 = 28479^2 + 13751^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 250035859 + ... + 250035862.

Almost surely, 2^1000143442 is an apocalyptic number.

1000143442 is a deficient number, since it is larger than the sum of its proper divisors (500071724).

1000143442 is an equidigital number, since it uses as much as digits as its factorization.

1000143442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 500071723.

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 1000143442 is about 31625.0445375180. The cubic root of 1000143442 is about 1000.0478117140.

Adding to 1000143442 its reverse (2443410001), we get a palindrome (3443553443).

The spelling of 1000143442 in words is "one billion, one hundred forty-three thousand, four hundred forty-two".