33142442 has 4 divisors (see below), whose sum is σ = 49713666. Its totient is φ = 16571220.

The previous prime is 33142423. The next prime is 33142477. The reversal of 33142442 is 24424133.

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

It can be written as a sum of positive squares in only one way, i.e., 31013761 + 2128681 = 5569^2 + 1459^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8285609 + ... + 8285612.

Almost surely, 2^33142442 is an apocalyptic number.

33142442 is a deficient number, since it is larger than the sum of its proper divisors (16571224).

33142442 is a wasteful number, since it uses less digits than its factorization.

33142442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16571223.

The product of its digits is 2304, while the sum is 23.

The square root of 33142442 is about 5756.9472813289. The cubic root of 33142442 is about 321.2142732050.

Adding to 33142442 its reverse (24424133), we get a palindrome (57566575).

The spelling of 33142442 in words is "thirty-three million, one hundred forty-two thousand, four hundred forty-two".