11902143 has 16 divisors (see below), whose sum is σ = 17488512. Its totient is φ = 7140000.

The previous prime is 11902133. The next prime is 11902183. The reversal of 11902143 is 34120911.

It is not a de Polignac number, because 11902143 - 2⁴ = 11902127 is a prime.

It is a super-2 number, since 2×11902143² = 283322015984898, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11902133) 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, 1548 + ... + 5118.

It is an arithmetic number, because the mean of its divisors is an integer number (1093032).

Almost surely, 2^11902143 is an apocalyptic number.

11902143 is a deficient number, since it is larger than the sum of its proper divisors (5586369).

11902143 is a wasteful number, since it uses less digits than its factorization.

11902143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3686.

The product of its (nonzero) digits is 216, while the sum is 21.

The square root of 11902143 is about 3449.9482604816. The cubic root of 11902143 is about 228.3188252751.

It can be divided in two parts, 1190 and 2143, that added together give a palindrome (3333).

The spelling of 11902143 in words is "eleven million, nine hundred two thousand, one hundred forty-three".