1920242101 has 16 divisors (see below), whose sum is σ = 2031966720. Its totient is φ = 1810963440.

The previous prime is 1920242059. The next prime is 1920242141. The reversal of 1920242101 is 1012420291.

It is a cyclic number.

It is not a de Polignac number, because 1920242101 - 2¹¹ = 1920240053 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 (1920242141) 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, 1639246 + ... + 1640416.

It is an arithmetic number, because the mean of its divisors is an integer number (126997920).

Almost surely, 2^1920242101 is an apocalyptic number.

It is an amenable number.

1920242101 is a deficient number, since it is larger than the sum of its proper divisors (111724619).

1920242101 is a wasteful number, since it uses less digits than its factorization.

1920242101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2136.

The product of its (nonzero) digits is 288, while the sum is 22.

The square root of 1920242101 is about 43820.5671003925. The cubic root of 1920242101 is about 1242.9452407482.

Adding to 1920242101 its reverse (1012420291), we get a palindrome (2932662392).

The spelling of 1920242101 in words is "one billion, nine hundred twenty million, two hundred forty-two thousand, one hundred one".