142189044 has 12 divisors (see below), whose sum is σ = 331774464. Its totient is φ = 47396344.

The previous prime is 142189009. The next prime is 142189057. The reversal of 142189044 is 440981241.

142189044 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (12).

It is a junction number, because it is equal to n+sod(n) for n = 142188996 and 142189014.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5924532 + ... + 5924555.

It is an arithmetic number, because the mean of its divisors is an integer number (27647872).

Almost surely, 2^142189044 is an apocalyptic number.

It is an amenable number.

142189044 is an abundant number, since it is smaller than the sum of its proper divisors (189585420).

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

142189044 is a wasteful number, since it uses less digits than its factorization.

142189044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11849094 (or 11849092 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 33.

The square root of 142189044 is about 11924.3047596076. The cubic root of 142189044 is about 521.9417588902.

The spelling of 142189044 in words is "one hundred forty-two million, one hundred eighty-nine thousand, forty-four".