142804457 has 2 divisors, whose sum is σ = 142804458. Its totient is φ = 142804456.

The previous prime is 142804451. The next prime is 142804469. The reversal of 142804457 is 754408241.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 126247696 + 16556761 = 11236^2 + 4069^2 .

It is a cyclic number.

It is not a de Polignac number, because 142804457 - 2⁶ = 142804393 is a prime.

It is a super-2 number, since 2×142804457² = 40786225878129698, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (142804451) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71402228 + 71402229.

It is an arithmetic number, because the mean of its divisors is an integer number (71402229).

Almost surely, 2^142804457 is an apocalyptic number.

It is an amenable number.

142804457 is a deficient number, since it is larger than the sum of its proper divisors (1).

142804457 is an equidigital number, since it uses as much as digits as its factorization.

142804457 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 35840, while the sum is 35.

The square root of 142804457 is about 11950.0818825647. The cubic root of 142804457 is about 522.6936861202.

The spelling of 142804457 in words is "one hundred forty-two million, eight hundred four thousand, four hundred fifty-seven".