133420979 has 2 divisors, whose sum is σ = 133420980. Its totient is φ = 133420978.

The previous prime is 133420951. The next prime is 133421003. The reversal of 133420979 is 979024331.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 133420979 - 2²⁰ = 132372403 is a prime.

It is not a weakly prime, because it can be changed into another prime (133420379) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66710489 + 66710490.

It is an arithmetic number, because the mean of its divisors is an integer number (66710490).

Almost surely, 2^133420979 is an apocalyptic number.

133420979 is a deficient number, since it is larger than the sum of its proper divisors (1).

133420979 is an equidigital number, since it uses as much as digits as its factorization.

133420979 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 40824, while the sum is 38.

The square root of 133420979 is about 11550.7999290092. The cubic root of 133420979 is about 510.9848699122.

The spelling of 133420979 in words is "one hundred thirty-three million, four hundred twenty thousand, nine hundred seventy-nine".