142401028 has 48 divisors (see below), whose sum is σ = 313342848. Its totient is φ = 55466400.

The previous prime is 142401019. The next prime is 142401031. The reversal of 142401028 is 820104241.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 35358 + ... + 39178.

It is an arithmetic number, because the mean of its divisors is an integer number (6527976).

Almost surely, 2^142401028 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 142401028, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (156671424).

142401028 is an abundant number, since it is smaller than the sum of its proper divisors (170941820).

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

142401028 is a wasteful number, since it uses less digits than its factorization.

142401028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3865 (or 3841 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 22.

The square root of 142401028 is about 11933.1901853612. The cubic root of 142401028 is about 522.2010108448.

Adding to 142401028 its reverse (820104241), we get a palindrome (962505269).

It can be divided in two parts, 14 and 2401028, that added together give a palindrome (2401042).

The spelling of 142401028 in words is "one hundred forty-two million, four hundred one thousand, twenty-eight".