109142148942 has 48 divisors (see below), whose sum is σ = 246472931328. Its totient is φ = 34865309520.

The previous prime is 109142148901. The next prime is 109142148943. The reversal of 109142148942 is 249841241901.

109142148942 is a `hidden beast` number, since 1 + 0 + 91 + 42 + 1 + 489 + 42 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (109142148943) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 892018 + ... + 1006965.

It is an arithmetic number, because the mean of its divisors is an integer number (5134852736).

Almost surely, 2^109142148942 is an apocalyptic number.

109142148942 is an abundant number, since it is smaller than the sum of its proper divisors (137330782386).

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

109142148942 is a wasteful number, since it uses less digits than its factorization.

109142148942 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1899125 (or 1899122 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 45.

The spelling of 109142148942 in words is "one hundred nine billion, one hundred forty-two million, one hundred forty-eight thousand, nine hundred forty-two".