142197111 has 12 divisors (see below), whose sum is σ = 234738192. Its totient is φ = 81255456.

The previous prime is 142197103. The next prime is 142197127. The reversal of 142197111 is 111791241.

It is not a de Polignac number, because 142197111 - 2³ = 142197103 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142197101) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1128486 + ... + 1128611.

It is an arithmetic number, because the mean of its divisors is an integer number (19561516).

Almost surely, 2^142197111 is an apocalyptic number.

142197111 is a deficient number, since it is larger than the sum of its proper divisors (92541081).

142197111 is a wasteful number, since it uses less digits than its factorization.

142197111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2257110 (or 2257107 counting only the distinct ones).

The product of its digits is 504, while the sum is 27.

The square root of 142197111 is about 11924.6430135246. The cubic root of 142197111 is about 521.9516293753.

The spelling of 142197111 in words is "one hundred forty-two million, one hundred ninety-seven thousand, one hundred eleven".