142211237 has 16 divisors (see below), whose sum is σ = 166636032. Its totient is φ = 118834560.

The previous prime is 142211203. The next prime is 142211249. The reversal of 142211237 is 732112241.

It is a cyclic number.

It is not a de Polignac number, because 142211237 - 2²² = 138016933 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142211837) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 102287 + ... + 103667.

It is an arithmetic number, because the mean of its divisors is an integer number (10414752).

Almost surely, 2^142211237 is an apocalyptic number.

It is an amenable number.

142211237 is a deficient number, since it is larger than the sum of its proper divisors (24424795).

142211237 is a wasteful number, since it uses less digits than its factorization.

142211237 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1748.

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

The square root of 142211237 is about 11925.2353016618. The cubic root of 142211237 is about 521.9689125314.

Adding to 142211237 its reverse (732112241), we get a palindrome (874323478).

The spelling of 142211237 in words is "one hundred forty-two million, two hundred eleven thousand, two hundred thirty-seven".