134737021 has 2 divisors, whose sum is σ = 134737022. Its totient is φ = 134737020.

The previous prime is 134736997. The next prime is 134737063. The reversal of 134737021 is 120737431.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 98604900 + 36132121 = 9930^2 + 6011^2 .

It is a cyclic number.

It is not a de Polignac number, because 134737021 - 2¹¹ = 134734973 is a prime.

It is a Chen prime.

It is equal to p_7631344 and since 134737021 and 7631344 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (134737921) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67368510 + 67368511.

It is an arithmetic number, because the mean of its divisors is an integer number (67368511).

Almost surely, 2^134737021 is an apocalyptic number.

It is an amenable number.

134737021 is a deficient number, since it is larger than the sum of its proper divisors (1).

134737021 is an equidigital number, since it uses as much as digits as its factorization.

134737021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3528, while the sum is 28.

The square root of 134737021 is about 11607.6277076757. The cubic root of 134737021 is about 512.6594654274.

The spelling of 134737021 in words is "one hundred thirty-four million, seven hundred thirty-seven thousand, twenty-one".