134781379 has 2 divisors, whose sum is σ = 134781380. Its totient is φ = 134781378.

The previous prime is 134781349. The next prime is 134781407. The reversal of 134781379 is 973187431.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 134781379 - 2¹⁹ = 134257091 is a prime.

It is not a weakly prime, because it can be changed into another prime (134781349) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67390689 + 67390690.

It is an arithmetic number, because the mean of its divisors is an integer number (67390690).

Almost surely, 2^134781379 is an apocalyptic number.

134781379 is a deficient number, since it is larger than the sum of its proper divisors (1).

134781379 is an equidigital number, since it uses as much as digits as its factorization.

134781379 is an evil number, because the sum of its binary digits is even.

The product of its digits is 127008, while the sum is 43.

The square root of 134781379 is about 11609.5382767791. The cubic root of 134781379 is about 512.7157183496.

The spelling of 134781379 in words is "one hundred thirty-four million, seven hundred eighty-one thousand, three hundred seventy-nine".