142405574 has 4 divisors (see below), whose sum is σ = 213608364. Its totient is φ = 71202786.

The previous prime is 142405567. The next prime is 142405643. The reversal of 142405574 is 475504241.

It is a semiprime because it is the product of two primes.

It is a self number, because there is not a number n which added to its sum of digits gives 142405574.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35601392 + ... + 35601395.

It is an arithmetic number, because the mean of its divisors is an integer number (53402091).

Almost surely, 2^142405574 is an apocalyptic number.

142405574 is a deficient number, since it is larger than the sum of its proper divisors (71202790).

142405574 is an equidigital number, since it uses as much as digits as its factorization.

142405574 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71202789.

The product of its (nonzero) digits is 22400, while the sum is 32.

The square root of 142405574 is about 11933.3806609862. The cubic root of 142405574 is about 522.2065676879.

The spelling of 142405574 in words is "one hundred forty-two million, four hundred five thousand, five hundred seventy-four".