142211995 has 4 divisors (see below), whose sum is σ = 170654400. Its totient is φ = 113769592.

The previous prime is 142211983. The next prime is 142211999. The reversal of 142211995 is 599112241.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 142211995 - 2⁵ = 142211963 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 142211995.

It is not an unprimeable number, because it can be changed into a prime (142211999) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14221195 + ... + 14221204.

It is an arithmetic number, because the mean of its divisors is an integer number (42663600).

Almost surely, 2^142211995 is an apocalyptic number.

142211995 is a deficient number, since it is larger than the sum of its proper divisors (28442405).

142211995 is an equidigital number, since it uses as much as digits as its factorization.

142211995 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28442404.

The product of its digits is 6480, while the sum is 34.

The square root of 142211995 is about 11925.2670829630. The cubic root of 142211995 is about 521.9698399118.

The spelling of 142211995 in words is "one hundred forty-two million, two hundred eleven thousand, nine hundred ninety-five".