134121779 has 32 divisors (see below), whose sum is σ = 161218560. Its totient is φ = 110224800.

The previous prime is 134121761. The next prime is 134121787. The reversal of 134121779 is 977121431.

It is a cyclic number.

It is not a de Polignac number, because 134121779 - 2⁸ = 134121523 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (134121709) 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 31 ways as a sum of consecutive naturals, for example, 822752 + ... + 822914.

It is an arithmetic number, because the mean of its divisors is an integer number (5038080).

Almost surely, 2^134121779 is an apocalyptic number.

134121779 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

134121779 is a deficient number, since it is larger than the sum of its proper divisors (27096781).

134121779 is a wasteful number, since it uses less digits than its factorization.

134121779 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 351.

The product of its digits is 10584, while the sum is 35.

The square root of 134121779 is about 11581.0957599011. The cubic root of 134121779 is about 511.8779654529.

The spelling of 134121779 in words is "one hundred thirty-four million, one hundred twenty-one thousand, seven hundred seventy-nine".