142235146 has 8 divisors (see below), whose sum is σ = 217378404. Its totient is φ = 69775680.

The previous prime is 142235143. The next prime is 142235179. The reversal of 142235146 is 641532241.

It can be written as a sum of positive squares in 2 ways, for example, as 137804121 + 4431025 = 11739^2 + 2105^2 .

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

It is not an unprimeable number, because it can be changed into a prime (142235143) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 670815 + ... + 671026.

Almost surely, 2^142235146 is an apocalyptic number.

142235146 is a deficient number, since it is larger than the sum of its proper divisors (75143258).

142235146 is a wasteful number, since it uses less digits than its factorization.

142235146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1341896.

The product of its digits is 5760, while the sum is 28.

The square root of 142235146 is about 11926.2377135457. The cubic root of 142235146 is about 521.9981625768.

Adding to 142235146 its reverse (641532241), we get a palindrome (783767387).

The spelling of 142235146 in words is "one hundred forty-two million, two hundred thirty-five thousand, one hundred forty-six".