142111428 has 24 divisors (see below), whose sum is σ = 331789920. Its totient is φ = 47342400.

The previous prime is 142111427. The next prime is 142111439. The reversal of 142111428 is 824111241.

It is a junction number, because it is equal to n+sod(n) for n = 142111398 and 142111407.

It is not an unprimeable number, because it can be changed into a prime (142111427) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31728 + ... + 35928.

It is an arithmetic number, because the mean of its divisors is an integer number (13824580).

Almost surely, 2^142111428 is an apocalyptic number.

It is an amenable number.

142111428 is an abundant number, since it is smaller than the sum of its proper divisors (189678492).

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

142111428 is a wasteful number, since it uses less digits than its factorization.

142111428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7027 (or 7025 counting only the distinct ones).

The product of its digits is 512, while the sum is 24.

The square root of 142111428 is about 11921.0497859878. The cubic root of 142111428 is about 521.8467717195.

Adding to 142111428 its reverse (824111241), we get a palindrome (966222669).

The spelling of 142111428 in words is "one hundred forty-two million, one hundred eleven thousand, four hundred twenty-eight".