142211273 has 8 divisors (see below), whose sum is σ = 155769480. Its totient is φ = 129230080.

The previous prime is 142211269. The next prime is 142211309. The reversal of 142211273 is 372112241.

It can be written as a sum of positive squares in 4 ways, for example, as 5508409 + 136702864 = 2347^2 + 11692^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 142211273 - 2² = 142211269 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (142211203) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 143738 + ... + 144723.

It is an arithmetic number, because the mean of its divisors is an integer number (19471185).

Almost surely, 2^142211273 is an apocalyptic number.

It is an amenable number.

142211273 is a deficient number, since it is larger than the sum of its proper divisors (13558207).

142211273 is a wasteful number, since it uses less digits than its factorization.

142211273 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 288507.

The product of its digits is 672, while the sum is 23.

The square root of 142211273 is about 11925.2368110658. The cubic root of 142211273 is about 521.9689565759.

The spelling of 142211273 in words is "one hundred forty-two million, two hundred eleven thousand, two hundred seventy-three".