134450670421 has 2 divisors, whose sum is σ = 134450670422. Its totient is φ = 134450670420.

The previous prime is 134450670397. The next prime is 134450670427. The reversal of 134450670421 is 124076054431.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 122002805521 + 12447864900 = 349289^2 + 111570^2 .

It is a cyclic number.

It is not a de Polignac number, because 134450670421 - 2⁹ = 134450669909 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (134450670427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67225335210 + 67225335211.

It is an arithmetic number, because the mean of its divisors is an integer number (67225335211).

Almost surely, 2^134450670421 is an apocalyptic number.

It is an amenable number.

134450670421 is a deficient number, since it is larger than the sum of its proper divisors (1).

134450670421 is an equidigital number, since it uses as much as digits as its factorization.

134450670421 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 80640, while the sum is 37.

The spelling of 134450670421 in words is "one hundred thirty-four billion, four hundred fifty million, six hundred seventy thousand, four hundred twenty-one".