133786542 has 16 divisors (see below), whose sum is σ = 271960272. Its totient is φ = 43864320.

The previous prime is 133786537. The next prime is 133786573. The reversal of 133786542 is 245687331.

It is a self number, because there is not a number n which added to its sum of digits gives 133786542.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 182403 + ... + 183134.

It is an arithmetic number, because the mean of its divisors is an integer number (16997517).

Almost surely, 2^133786542 is an apocalyptic number.

133786542 is an abundant number, since it is smaller than the sum of its proper divisors (138173730).

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

133786542 is a wasteful number, since it uses less digits than its factorization.

133786542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 365603.

The product of its digits is 120960, while the sum is 39.

The square root of 133786542 is about 11566.6132467546. The cubic root of 133786542 is about 511.4511304645.

The spelling of 133786542 in words is "one hundred thirty-three million, seven hundred eighty-six thousand, five hundred forty-two".