3721862142 has 64 divisors (see below), whose sum is σ = 8476695360. Its totient is φ = 1210015872.

The previous prime is 3721862087. The next prime is 3721862147. The reversal of 3721862142 is 2412681273.

It is a happy number.

3721862142 is a `hidden beast` number, since 3 + 7 + 21 + 8 + 621 + 4 + 2 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 3721862097 and 3721862106.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3721862147) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 491368 + ... + 498884.

It is an arithmetic number, because the mean of its divisors is an integer number (132448365).

Almost surely, 2^3721862142 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3721862142, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4238347680).

3721862142 is an abundant number, since it is smaller than the sum of its proper divisors (4754833218).

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

3721862142 is a wasteful number, since it uses less digits than its factorization.

3721862142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7754 (or 7748 counting only the distinct ones).

The product of its digits is 32256, while the sum is 36.

The square root of 3721862142 is about 61007.0663284181. The cubic root of 3721862142 is about 1549.7206769646.

The spelling of 3721862142 in words is "three billion, seven hundred twenty-one million, eight hundred sixty-two thousand, one hundred forty-two".