101020194 has 24 divisors (see below), whose sum is σ = 238775472. Its totient is φ = 30612120.

The previous prime is 101020189. The next prime is 101020217. The reversal of 101020194 is 491020101.

It is a hoax number, since the sum of its digits (18) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 254904 + ... + 255299.

It is an arithmetic number, because the mean of its divisors is an integer number (9948978).

Almost surely, 2^101020194 is an apocalyptic number.

101020194 is an abundant number, since it is smaller than the sum of its proper divisors (137755278).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

101020194 is a wasteful number, since it uses less digits than its factorization.

101020194 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 510222 (or 510219 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 18.

The square root of 101020194 is about 10050.8802599573. The cubic root of 101020194 is about 465.7319862203.

Adding to 101020194 its reverse (491020101), we get a palindrome (592040295).

The spelling of 101020194 in words is "one hundred one million, twenty thousand, one hundred ninety-four".