142004069 has 2 divisors, whose sum is σ = 142004070. Its totient is φ = 142004068.

The previous prime is 142004063. The next prime is 142004089. The reversal of 142004069 is 960400241.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 75777025 + 66227044 = 8705^2 + 8138^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-142004069 is a prime.

It is a super-2 number, since 2×142004069² = 40330311225113522, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (142004063) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71002034 + 71002035.

It is an arithmetic number, because the mean of its divisors is an integer number (71002035).

Almost surely, 2^142004069 is an apocalyptic number.

It is an amenable number.

142004069 is a deficient number, since it is larger than the sum of its proper divisors (1).

142004069 is an equidigital number, since it uses as much as digits as its factorization.

142004069 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1728, while the sum is 26.

The square root of 142004069 is about 11916.5460180373. The cubic root of 142004069 is about 521.7153277711.

The spelling of 142004069 in words is "one hundred forty-two million, four thousand, sixty-nine".