142133442 has 32 divisors (see below), whose sum is σ = 310665024. Its totient is φ = 42993600.

The previous prime is 142133441. The next prime is 142133443. The reversal of 142133442 is 244331241.

It is an interprime number because it is at equal distance from previous prime (142133441) and next prime (142133443).

It is not an unprimeable number, because it can be changed into a prime (142133441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 43092 + ... + 46272.

It is an arithmetic number, because the mean of its divisors is an integer number (9708282).

Almost surely, 2^142133442 is an apocalyptic number.

142133442 is an abundant number, since it is smaller than the sum of its proper divisors (168531582).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

142133442 is a wasteful number, since it uses less digits than its factorization.

142133442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3874.

The product of its digits is 2304, while the sum is 24.

The square root of 142133442 is about 11921.9730749570. The cubic root of 142133442 is about 521.8737161669.

Adding to 142133442 its reverse (244331241), we get a palindrome (386464683).

The spelling of 142133442 in words is "one hundred forty-two million, one hundred thirty-three thousand, four hundred forty-two".