102021194 has 16 divisors (see below), whose sum is σ = 168069600. Its totient is φ = 46060560.

The previous prime is 102021149. The next prime is 102021197. The reversal of 102021194 is 491120201.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (102021197) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12284 + ... + 18839.

It is an arithmetic number, because the mean of its divisors is an integer number (10504350).

Almost surely, 2^102021194 is an apocalyptic number.

102021194 is a deficient number, since it is larger than the sum of its proper divisors (66048406).

102021194 is a wasteful number, since it uses less digits than its factorization.

102021194 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31285.

The product of its (nonzero) digits is 144, while the sum is 20.

The square root of 102021194 is about 10100.5541432141. The cubic root of 102021194 is about 467.2652318150.

Adding to 102021194 its reverse (491120201), we get a palindrome (593141395).

The spelling of 102021194 in words is "one hundred two million, twenty-one thousand, one hundred ninety-four".