133420751 has 2 divisors, whose sum is σ = 133420752. Its totient is φ = 133420750.

The previous prime is 133420747. The next prime is 133420753. The reversal of 133420751 is 157024331.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 133420751 - 2² = 133420747 is a prime.

Together with 133420753, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 133420751.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (133420753) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66710375 + 66710376.

It is an arithmetic number, because the mean of its divisors is an integer number (66710376).

Almost surely, 2^133420751 is an apocalyptic number.

133420751 is a deficient number, since it is larger than the sum of its proper divisors (1).

133420751 is an equidigital number, since it uses as much as digits as its factorization.

133420751 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2520, while the sum is 26.

The square root of 133420751 is about 11550.7900595587. The cubic root of 133420751 is about 510.9845788420.

The spelling of 133420751 in words is "one hundred thirty-three million, four hundred twenty thousand, seven hundred fifty-one".