33142330 has 16 divisors (see below), whose sum is σ = 64245384. Its totient is φ = 12237120.

The previous prime is 33142297. The next prime is 33142349. The reversal of 33142330 is 3324133.

It can be written as a sum of positive squares in 4 ways, for example, as 18173169 + 14969161 = 4263^2 + 3869^2 .

It is a junction number, because it is equal to n+sod(n) for n = 33142298 and 33142307.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 127341 + ... + 127600.

Almost surely, 2^33142330 is an apocalyptic number.

33142330 is a deficient number, since it is larger than the sum of its proper divisors (31103054).

33142330 is a wasteful number, since it uses less digits than its factorization.

33142330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 254961.

The product of its (nonzero) digits is 648, while the sum is 19.

The square root of 33142330 is about 5756.9375539431. The cubic root of 33142330 is about 321.2139113724.

Adding to 33142330 its reverse (3324133), we get a palindrome (36466463).

The spelling of 33142330 in words is "thirty-three million, one hundred forty-two thousand, three hundred thirty".