1200140269 has 2 divisors, whose sum is σ = 1200140270. Its totient is φ = 1200140268.

The previous prime is 1200140237. The next prime is 1200140303. The reversal of 1200140269 is 9620410021.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1155116169 + 45024100 = 33987^2 + 6710^2 .

It is a cyclic number.

It is not a de Polignac number, because 1200140269 - 2⁵ = 1200140237 is a prime.

It is a super-2 number, since 2×1200140269² = 2880673330550784722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1200140209) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 600070134 + 600070135.

It is an arithmetic number, because the mean of its divisors is an integer number (600070135).

Almost surely, 2^1200140269 is an apocalyptic number.

It is an amenable number.

1200140269 is a deficient number, since it is larger than the sum of its proper divisors (1).

1200140269 is an equidigital number, since it uses as much as digits as its factorization.

1200140269 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 864, while the sum is 25.

The square root of 1200140269 is about 34643.0407008392. The cubic root of 1200140269 is about 1062.6999725847.

The spelling of 1200140269 in words is "one billion, two hundred million, one hundred forty thousand, two hundred sixty-nine".