142442442 has 64 divisors (see below), whose sum is σ = 326229120. Its totient is φ = 46051200.

The previous prime is 142442437. The next prime is 142442479. The reversal of 142442442 is 244244241.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 273142 + ... + 273662.

It is an arithmetic number, because the mean of its divisors is an integer number (5097330).

Almost surely, 2^142442442 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 142442442, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (163114560).

142442442 is an abundant number, since it is smaller than the sum of its proper divisors (183786678).

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

142442442 is a wasteful number, since it uses less digits than its factorization.

142442442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 676 (or 670 counting only the distinct ones).

The product of its digits is 8192, while the sum is 27.

The square root of 142442442 is about 11934.9253034948. The cubic root of 142442442 is about 522.2516292445.

Adding to 142442442 its reverse (244244241), we get a palindrome (386686683).

It can be divided in two parts, 142442 and 442, that added together give a square (142884 = 378²).

The spelling of 142442442 in words is "one hundred forty-two million, four hundred forty-two thousand, four hundred forty-two".