142620266 has 4 divisors (see below), whose sum is σ = 213930402. Its totient is φ = 71310132.

The previous prime is 142620253. The next prime is 142620271. The reversal of 142620266 is 662026241.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 662026241 = 79 ⋅8380079.

It can be written as a sum of positive squares in only one way, i.e., 142301041 + 319225 = 11929^2 + 565^2 .

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35655065 + ... + 35655068.

Almost surely, 2^142620266 is an apocalyptic number.

142620266 is a deficient number, since it is larger than the sum of its proper divisors (71310136).

142620266 is an equidigital number, since it uses as much as digits as its factorization.

142620266 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71310135.

The product of its (nonzero) digits is 6912, while the sum is 29.

The square root of 142620266 is about 11942.3727123215. The cubic root of 142620266 is about 522.4688637841.

The spelling of 142620266 in words is "one hundred forty-two million, six hundred twenty thousand, two hundred sixty-six".