142948669 has 2 divisors, whose sum is σ = 142948670. Its totient is φ = 142948668.

The previous prime is 142948661. The next prime is 142948679. The reversal of 142948669 is 966849241.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 142205625 + 743044 = 11925^2 + 862^2 .

It is a cyclic number.

It is not a de Polignac number, because 142948669 - 2³ = 142948661 is a prime.

It is a super-2 number, since 2×142948669² = 40868643937743122, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (142948661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71474334 + 71474335.

It is an arithmetic number, because the mean of its divisors is an integer number (71474335).

Almost surely, 2^142948669 is an apocalyptic number.

It is an amenable number.

142948669 is a deficient number, since it is larger than the sum of its proper divisors (1).

142948669 is an equidigital number, since it uses as much as digits as its factorization.

142948669 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 746496, while the sum is 49.

The square root of 142948669 is about 11956.1142935320. The cubic root of 142948669 is about 522.8695754535.

The spelling of 142948669 in words is "one hundred forty-two million, nine hundred forty-eight thousand, six hundred sixty-nine".