139084542 has 24 divisors (see below), whose sum is σ = 314452944. Its totient is φ = 44345664.

The previous prime is 139084537. The next prime is 139084549. The reversal of 139084542 is 245480931.

139084542 is a `hidden beast` number, since 1 + 39 + 0 + 84 + 542 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 139084497 and 139084506.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139084549) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 167563 + ... + 168390.

It is an arithmetic number, because the mean of its divisors is an integer number (13102206).

Almost surely, 2^139084542 is an apocalyptic number.

139084542 is an abundant number, since it is smaller than the sum of its proper divisors (175368402).

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

139084542 is a wasteful number, since it uses less digits than its factorization.

139084542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 335984 (or 335981 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 36.

The square root of 139084542 is about 11793.4109569708. The cubic root of 139084542 is about 518.1151461101.

The spelling of 139084542 in words is "one hundred thirty-nine million, eighty-four thousand, five hundred forty-two".