3721421912 has 24 divisors (see below), whose sum is σ = 7555700340. Its totient is φ = 1717578720.

The previous prime is 3721421911. The next prime is 3721421933. The reversal of 3721421912 is 2191241273.

It is a super-2 number, since 2×3721421912² = 27697962094227471488, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3721421911) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1374914 + ... + 1377617.

Almost surely, 2^3721421912 is an apocalyptic number.

It is an amenable number.

3721421912 is an abundant number, since it is smaller than the sum of its proper divisors (3834278428).

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

3721421912 is a wasteful number, since it uses less digits than its factorization.

3721421912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2752563 (or 2752546 counting only the distinct ones).

The product of its digits is 6048, while the sum is 32.

The square root of 3721421912 is about 61003.4581970563. The cubic root of 3721421912 is about 1549.6595731042.

The spelling of 3721421912 in words is "three billion, seven hundred twenty-one million, four hundred twenty-one thousand, nine hundred twelve".