11900143 has 8 divisors (see below), whose sum is σ = 12238128. Its totient is φ = 11566464.

The previous prime is 11900107. The next prime is 11900149. The reversal of 11900143 is 34100911.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11900143 is a prime.

It is a super-2 number, since 2×11900143² = 283226806840898, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 11900143.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11900149) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4996 + ... + 6982.

It is an arithmetic number, because the mean of its divisors is an integer number (1529766).

Almost surely, 2^11900143 is an apocalyptic number.

11900143 is a deficient number, since it is larger than the sum of its proper divisors (337985).

11900143 is a wasteful number, since it uses less digits than its factorization.

11900143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2153.

The product of its (nonzero) digits is 108, while the sum is 19.

The square root of 11900143 is about 3449.6583888843. The cubic root of 11900143 is about 228.3060358911.

The spelling of 11900143 in words is "eleven million, nine hundred thousand, one hundred forty-three".