1912442421 has 32 divisors (see below), whose sum is σ = 2862425088. Its totient is φ = 1129835520.

The previous prime is 1912442339. The next prime is 1912442431. The reversal of 1912442421 is 1242442191.

It is not a de Polignac number, because 1912442421 - 2¹⁰ = 1912441397 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1912442431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 42151 + ... + 74843.

It is an arithmetic number, because the mean of its divisors is an integer number (89450784).

Almost surely, 2^1912442421 is an apocalyptic number.

It is an amenable number.

1912442421 is a deficient number, since it is larger than the sum of its proper divisors (949982667).

1912442421 is a wasteful number, since it uses less digits than its factorization.

1912442421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32781.

The product of its digits is 4608, while the sum is 30.

The square root of 1912442421 is about 43731.4808919158. The cubic root of 1912442421 is about 1241.2600833217.

The spelling of 1912442421 in words is "one billion, nine hundred twelve million, four hundred forty-two thousand, four hundred twenty-one".