142115428 has 48 divisors (see below), whose sum is σ = 316673280. Its totient is φ = 54278784.

The previous prime is 142115417. The next prime is 142115429. The reversal of 142115428 is 824511241.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a junction number, because it is equal to n+sod(n) for n = 142115396 and 142115405.

It is not an unprimeable number, because it can be changed into a prime (142115429) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3825 + ... + 17287.

It is an arithmetic number, because the mean of its divisors is an integer number (6597360).

Almost surely, 2^142115428 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 142115428, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (158336640).

142115428 is an abundant number, since it is smaller than the sum of its proper divisors (174557852).

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

142115428 is a wasteful number, since it uses less digits than its factorization.

142115428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13516 (or 13514 counting only the distinct ones).

The product of its digits is 2560, while the sum is 28.

The square root of 142115428 is about 11921.2175552667. The cubic root of 142115428 is about 521.8516678012.

Adding to 142115428 its reverse (824511241), we get a palindrome (966626669).

The spelling of 142115428 in words is "one hundred forty-two million, one hundred fifteen thousand, four hundred twenty-eight".