142345066 has 4 divisors (see below), whose sum is σ = 213517602. Its totient is φ = 71172532.

The previous prime is 142345061. The next prime is 142345067. The reversal of 142345066 is 660543241.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 660543241 = 3467 ⋅190523.

It can be written as a sum of positive squares in only one way, i.e., 114939841 + 27405225 = 10721^2 + 5235^2 .

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (142345061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35586265 + ... + 35586268.

Almost surely, 2^142345066 is an apocalyptic number.

142345066 is a deficient number, since it is larger than the sum of its proper divisors (71172536).

142345066 is an equidigital number, since it uses as much as digits as its factorization.

142345066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71172535.

The product of its (nonzero) digits is 17280, while the sum is 31.

The square root of 142345066 is about 11930.8451502817. The cubic root of 142345066 is about 522.1325955101.

The spelling of 142345066 in words is "one hundred forty-two million, three hundred forty-five thousand, sixty-six".