142552217 has 8 divisors (see below), whose sum is σ = 143410176. Its totient is φ = 141697552.

The previous prime is 142552211. The next prime is 142552237. The reversal of 142552217 is 712255241.

It is a happy number.

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 142552217 - 2¹⁰ = 142551193 is a prime.

It is a super-2 number, since 2×142552217² = 40642269143230178, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 142552217.

It is not an unprimeable number, because it can be changed into a prime (142552211) 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, 178463 + ... + 179259.

It is an arithmetic number, because the mean of its divisors is an integer number (17926272).

Almost surely, 2^142552217 is an apocalyptic number.

It is an amenable number.

142552217 is a deficient number, since it is larger than the sum of its proper divisors (857959).

142552217 is an equidigital number, since it uses as much as digits as its factorization.

142552217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1647.

The product of its digits is 5600, while the sum is 29.

The square root of 142552217 is about 11939.5233154427. The cubic root of 142552217 is about 522.3857546515.

The spelling of 142552217 in words is "one hundred forty-two million, five hundred fifty-two thousand, two hundred seventeen".