128494073 has 2 divisors, whose sum is σ = 128494074. Its totient is φ = 128494072.

The previous prime is 128494061. The next prime is 128494103. The reversal of 128494073 is 370494821.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 88209664 + 40284409 = 9392^2 + 6347^2 .

It is a cyclic number.

It is not a de Polignac number, because 128494073 - 2¹⁰ = 128493049 is a prime.

It is a super-2 number, since 2×128494073² = 33021453592258658, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (128494013) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64247036 + 64247037.

It is an arithmetic number, because the mean of its divisors is an integer number (64247037).

Almost surely, 2^128494073 is an apocalyptic number.

It is an amenable number.

128494073 is a deficient number, since it is larger than the sum of its proper divisors (1).

128494073 is an equidigital number, since it uses as much as digits as its factorization.

128494073 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 48384, while the sum is 38.

The square root of 128494073 is about 11335.5226169771. The cubic root of 128494073 is about 504.6160176209.

The spelling of 128494073 in words is "one hundred twenty-eight million, four hundred ninety-four thousand, seventy-three".