64142269 has 2 divisors, whose sum is σ = 64142270. Its totient is φ = 64142268.

The previous prime is 64142257. The next prime is 64142279. The reversal of 64142269 is 96224146.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 45738169 + 18404100 = 6763^2 + 4290^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-64142269 is a prime.

It is a super-2 number, since 2×64142269² = 8228461344936722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (64142209) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32071134 + 32071135.

It is an arithmetic number, because the mean of its divisors is an integer number (32071135).

Almost surely, 2^64142269 is an apocalyptic number.

It is an amenable number.

64142269 is a deficient number, since it is larger than the sum of its proper divisors (1).

64142269 is an equidigital number, since it uses as much as digits as its factorization.

64142269 is an evil number, because the sum of its binary digits is even.

The product of its digits is 20736, while the sum is 34.

The square root of 64142269 is about 8008.8868764642. The cubic root of 64142269 is about 400.2961743977.

The spelling of 64142269 in words is "sixty-four million, one hundred forty-two thousand, two hundred sixty-nine".