142889044 has 24 divisors (see below), whose sum is σ = 271712000. Its totient is φ = 65499840.

The previous prime is 142889039. The next prime is 142889069. The reversal of 142889044 is 440988241.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 142888988 and 142889006.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27969 + ... + 32680.

Almost surely, 2^142889044 is an apocalyptic number.

It is an amenable number.

142889044 is a deficient number, since it is larger than the sum of its proper divisors (128822956).

142889044 is a wasteful number, since it uses less digits than its factorization.

142889044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60703 (or 60701 counting only the distinct ones).

The product of its (nonzero) digits is 73728, while the sum is 40.

The square root of 142889044 is about 11953.6205394014. The cubic root of 142889044 is about 522.7968676900.

It can be divided in two parts, 14288 and 9044, that added together give a palindrome (23332).

The spelling of 142889044 in words is "one hundred forty-two million, eight hundred eighty-nine thousand, forty-four".