64542029 has 2 divisors, whose sum is σ = 64542030. Its totient is φ = 64542028.

The previous prime is 64542019. The next prime is 64542059. The reversal of 64542029 is 92024546.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 59320804 + 5221225 = 7702^2 + 2285^2 .

It is a cyclic number.

It is not a de Polignac number, because 64542029 - 2¹⁶ = 64476493 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 64541986 and 64542004.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (64542019) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32271014 + 32271015.

It is an arithmetic number, because the mean of its divisors is an integer number (32271015).

Almost surely, 2^64542029 is an apocalyptic number.

It is an amenable number.

64542029 is a deficient number, since it is larger than the sum of its proper divisors (1).

64542029 is an equidigital number, since it uses as much as digits as its factorization.

64542029 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 17280, while the sum is 32.

The square root of 64542029 is about 8033.8053872371. The cubic root of 64542029 is about 401.1260541140.

The spelling of 64542029 in words is "sixty-four million, five hundred forty-two thousand, twenty-nine".