142697066 has 4 divisors (see below), whose sum is σ = 214045602. Its totient is φ = 71348532.

The previous prime is 142697057. The next prime is 142697077. The reversal of 142697066 is 660796241.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 660796241 = 7 ⋅94399463.

It can be written as a sum of positive squares in only one way, i.e., 83083225 + 59613841 = 9115^2 + 7721^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35674265 + ... + 35674268.

Almost surely, 2^142697066 is an apocalyptic number.

142697066 is a deficient number, since it is larger than the sum of its proper divisors (71348536).

142697066 is an equidigital number, since it uses as much as digits as its factorization.

142697066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71348535.

The product of its (nonzero) digits is 108864, while the sum is 41.

The square root of 142697066 is about 11945.5877209956. The cubic root of 142697066 is about 522.5626288793.

The spelling of 142697066 in words is "one hundred forty-two million, six hundred ninety-seven thousand, sixty-six".