142102444 has 96 divisors (see below), whose sum is σ = 301593600. Its totient is φ = 57879360.

The previous prime is 142102421. The next prime is 142102447. The reversal of 142102444 is 444201241.

142102444 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not an unprimeable number, because it can be changed into a prime (142102447) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2120899 + ... + 2120965.

It is an arithmetic number, because the mean of its divisors is an integer number (3141600).

Almost surely, 2^142102444 is an apocalyptic number.

It is an amenable number.

142102444 is an abundant number, since it is smaller than the sum of its proper divisors (159491156).

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

142102444 is a wasteful number, since it uses less digits than its factorization.

142102444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 203 (or 201 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 22.

The square root of 142102444 is about 11920.6729675803. The cubic root of 142102444 is about 521.8357747850.

Adding to 142102444 its reverse (444201241), we get a palindrome (586303685).

The spelling of 142102444 in words is "one hundred forty-two million, one hundred two thousand, four hundred forty-four".