201111742 has 16 divisors (see below), whose sum is σ = 326177712. Its totient is φ = 92448000.

The previous prime is 201111721. The next prime is 201111763. The reversal of 201111742 is 247111102.

It is an interprime number because it is at equal distance from previous prime (201111721) and next prime (201111763).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8883 + ... + 21934.

It is an arithmetic number, because the mean of its divisors is an integer number (20386107).

Almost surely, 2^201111742 is an apocalyptic number.

201111742 is a deficient number, since it is larger than the sum of its proper divisors (125065970).

201111742 is a wasteful number, since it uses less digits than its factorization.

201111742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31083.

The product of its (nonzero) digits is 112, while the sum is 19.

The square root of 201111742 is about 14181.3871676927. The cubic root of 201111742 is about 585.8851304856.

Adding to 201111742 its reverse (247111102), we get a palindrome (448222844).

The spelling of 201111742 in words is "two hundred one million, one hundred eleven thousand, seven hundred forty-two".