1921124104 has 16 divisors (see below), whose sum is σ = 3602573100. Its totient is φ = 960437952.

The previous prime is 1921124081. The next prime is 1921124113. The reversal of 1921124104 is 4014211291.

It can be written as a sum of positive squares in 2 ways, for example, as 1806420004 + 114704100 = 42502^2 + 10710^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 110262 + ... + 126490.

Almost surely, 2^1921124104 is an apocalyptic number.

It is an amenable number.

1921124104 is a deficient number, since it is larger than the sum of its proper divisors (1681448996).

1921124104 is a wasteful number, since it uses less digits than its factorization.

1921124104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31032 (or 31028 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 25.

The square root of 1921124104 is about 43830.6297467878. The cubic root of 1921124104 is about 1243.1355142604.

Adding to 1921124104 its reverse (4014211291), we get a palindrome (5935335395).

It can be divided in two parts, 1921 and 124104, that added together give a square (126025 = 355²).

The spelling of 1921124104 in words is "one billion, nine hundred twenty-one million, one hundred twenty-four thousand, one hundred four".