102021143 has 8 divisors (see below), whose sum is σ = 116838912. Its totient is φ = 87264216.

The previous prime is 102021133. The next prime is 102021149. The reversal of 102021143 is 341120201.

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

It is a cyclic number.

It is not a de Polignac number, because 102021143 - 2⁸ = 102020887 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 (102021149) 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, 11555 + ... + 18372.

It is an arithmetic number, because the mean of its divisors is an integer number (14604864).

Almost surely, 2^102021143 is an apocalyptic number.

102021143 is a deficient number, since it is larger than the sum of its proper divisors (14817769).

102021143 is an equidigital number, since it uses as much as digits as its factorization.

102021143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30421.

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 102021143 is about 10100.5516185998. The cubic root of 102021143 is about 467.2651539536.

Adding to 102021143 its reverse (341120201), we get a palindrome (443141344).

The spelling of 102021143 in words is "one hundred two million, twenty-one thousand, one hundred forty-three".