142774369 has 2 divisors, whose sum is σ = 142774370. Its totient is φ = 142774368.

The previous prime is 142774351. The next prime is 142774403. The reversal of 142774369 is 963477241.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 91107025 + 51667344 = 9545^2 + 7188^2 .

It is a cyclic number.

It is not a de Polignac number, because 142774369 - 2⁷ = 142774241 is a prime.

It is a super-2 number, since 2×142774369² = 40769040886696322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (142774309) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71387184 + 71387185.

It is an arithmetic number, because the mean of its divisors is an integer number (71387185).

Almost surely, 2^142774369 is an apocalyptic number.

It is an amenable number.

142774369 is a deficient number, since it is larger than the sum of its proper divisors (1).

142774369 is an equidigital number, since it uses as much as digits as its factorization.

142774369 is an evil number, because the sum of its binary digits is even.

The product of its digits is 254016, while the sum is 43.

The square root of 142774369 is about 11948.8229127391. The cubic root of 142774369 is about 522.6569741188.

The spelling of 142774369 in words is "one hundred forty-two million, seven hundred seventy-four thousand, three hundred sixty-nine".