142449188 has 48 divisors (see below), whose sum is σ = 304746624. Its totient is φ = 56870400.

The previous prime is 142449173. The next prime is 142449227. The reversal of 142449188 is 881944241.

It is a happy number.

It is a Smith number, since the sum of its digits (41) coincides with the sum of the digits of its prime factors.

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, 46595 + ... + 49557.

It is an arithmetic number, because the mean of its divisors is an integer number (6348888).

Almost surely, 2^142449188 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 142449188, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (152373312).

142449188 is an abundant number, since it is smaller than the sum of its proper divisors (162297436).

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

142449188 is a wasteful number, since it uses less digits than its factorization.

142449188 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3092 (or 3090 counting only the distinct ones).

The product of its digits is 73728, while the sum is 41.

The square root of 142449188 is about 11935.2079160775. The cubic root of 142449188 is about 522.2598736363.

It can be divided in two parts, 14244 and 9188, that added together give a palindrome (23432).

The spelling of 142449188 in words is "one hundred forty-two million, four hundred forty-nine thousand, one hundred eighty-eight".