1920820124 has 12 divisors (see below), whose sum is σ = 3538353000. Its totient is φ = 909862128.

The previous prime is 1920820073. The next prime is 1920820129. The reversal of 1920820124 is 4210280291.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1920820129) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12636899 + ... + 12637050.

It is an arithmetic number, because the mean of its divisors is an integer number (294862750).

Almost surely, 2^1920820124 is an apocalyptic number.

It is an amenable number.

1920820124 is a deficient number, since it is larger than the sum of its proper divisors (1617532876).

1920820124 is a wasteful number, since it uses less digits than its factorization.

1920820124 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25273972 (or 25273970 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 29.

The square root of 1920820124 is about 43827.1619432516. The cubic root of 1920820124 is about 1243.0699435761.

The spelling of 1920820124 in words is "one billion, nine hundred twenty million, eight hundred twenty thousand, one hundred twenty-four".