1942021530 has 48 divisors (see below), whose sum is σ = 5053842144. Its totient is φ = 517402080.

The previous prime is 1942021519. The next prime is 1942021531. The reversal of 1942021530 is 351202491.

1942021530 is a `hidden beast` number, since 1 + 94 + 20 + 21 + 530 = 666.

1942021530 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 1942021494 and 1942021503.

It is not an unprimeable number, because it can be changed into a prime (1942021531) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 96177 + ... + 114603.

It is an arithmetic number, because the mean of its divisors is an integer number (105288378).

Almost surely, 2^1942021530 is an apocalyptic number.

1942021530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1942021530 is an abundant number, since it is smaller than the sum of its proper divisors (3111820614).

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

1942021530 is a wasteful number, since it uses less digits than its factorization.

1942021530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19611 (or 19608 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 27.

The square root of 1942021530 is about 44068.3733532337. The cubic root of 1942021530 is about 1247.6267567581.

The spelling of 1942021530 in words is "one billion, nine hundred forty-two million, twenty-one thousand, five hundred thirty".