142191124 has 6 divisors (see below), whose sum is σ = 248834474. Its totient is φ = 71095560.

The previous prime is 142191097. The next prime is 142191131. The reversal of 142191124 is 421191241.

142191124 is digitally balanced in base 3 and base 9, because in such bases it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 98366724 + 43824400 = 9918^2 + 6620^2 .

142191124 is strictly pandigital in base 9.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17773887 + ... + 17773894.

Almost surely, 2^142191124 is an apocalyptic number.

It is an amenable number.

142191124 is a deficient number, since it is larger than the sum of its proper divisors (106643350).

142191124 is a wasteful number, since it uses less digits than its factorization.

142191124 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35547785 (or 35547783 counting only the distinct ones).

The product of its digits is 576, while the sum is 25.

The square root of 142191124 is about 11924.3919761135. The cubic root of 142191124 is about 521.9443039376.

The spelling of 142191124 in words is "one hundred forty-two million, one hundred ninety-one thousand, one hundred twenty-four".