142530404 has 12 divisors (see below), whose sum is σ = 253517628. Its totient is φ = 70096800.

The previous prime is 142530359. The next prime is 142530413. The reversal of 142530404 is 404035241.

It can be written as a sum of positive squares in 2 ways, for example, as 60808804 + 81721600 = 7798^2 + 9040^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 142530404.

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, 291827 + ... + 292314.

It is an arithmetic number, because the mean of its divisors is an integer number (21126469).

Almost surely, 2^142530404 is an apocalyptic number.

It is an amenable number.

142530404 is a deficient number, since it is larger than the sum of its proper divisors (110987224).

142530404 is a wasteful number, since it uses less digits than its factorization.

142530404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 584206 (or 584204 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 23.

The square root of 142530404 is about 11938.6098018153. The cubic root of 142530404 is about 522.3591085519.

Adding to 142530404 its reverse (404035241), we get a palindrome (546565645).

The spelling of 142530404 in words is "one hundred forty-two million, five hundred thirty thousand, four hundred four".