142211445 has 16 divisors (see below), whose sum is σ = 227715072. Its totient is φ = 75787200.

The previous prime is 142211429. The next prime is 142211479. The reversal of 142211445 is 544112241.

It is not a de Polignac number, because 142211445 - 2⁴ = 142211429 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22095 + ... + 27795.

It is an arithmetic number, because the mean of its divisors is an integer number (14232192).

Almost surely, 2^142211445 is an apocalyptic number.

142211445 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

142211445 is a deficient number, since it is larger than the sum of its proper divisors (85503627).

142211445 is a wasteful number, since it uses less digits than its factorization.

142211445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7372.

The product of its digits is 1280, while the sum is 24.

The square root of 142211445 is about 11925.2440226605. The cubic root of 142211445 is about 521.9691670108.

Adding to 142211445 its reverse (544112241), we get a palindrome (686323686).

The spelling of 142211445 in words is "one hundred forty-two million, two hundred eleven thousand, four hundred forty-five".