11950143 has 4 divisors (see below), whose sum is σ = 15933528. Its totient is φ = 7966760.

The previous prime is 11950139. The next prime is 11950151. The reversal of 11950143 is 34105911.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 11950143 - 2² = 11950139 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11950123) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1991688 + ... + 1991693.

It is an arithmetic number, because the mean of its divisors is an integer number (3983382).

Almost surely, 2^11950143 is an apocalyptic number.

11950143 is a deficient number, since it is larger than the sum of its proper divisors (3983385).

11950143 is an equidigital number, since it uses as much as digits as its factorization.

11950143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3983384.

The product of its (nonzero) digits is 540, while the sum is 24.

The square root of 11950143 is about 3456.8978868344. The cubic root of 11950143 is about 228.6253416166.

The spelling of 11950143 in words is "eleven million, nine hundred fifty thousand, one hundred forty-three".