4123771869420 has 360 divisors, whose sum is σ = 15567416781840. Its totient is φ = 910073283840.

The previous prime is 4123771869389. The next prime is 4123771869473. The reversal of 4123771869420 is 249681773214.

4123771869420 is a `hidden beast` number, since 4 + 1 + 2 + 37 + 7 + 186 + 9 + 420 = 666.

It is a super-2 number, since 2×4123771869420² (a number of 26 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 119 ways as a sum of consecutive naturals, for example, 1406335 + ... + 3197705.

It is an arithmetic number, because the mean of its divisors is an integer number (43242824394).

Almost surely, 2^{4123771869420} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4123771869420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7783708390920).

4123771869420 is an abundant number, since it is smaller than the sum of its proper divisors (11443644912420).

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

4123771869420 is a wasteful number, since it uses less digits than its factorization.

4123771869420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1791435 (or 1791417 counting only the distinct ones).

The product of its (nonzero) digits is 4064256, while the sum is 54.

The spelling of 4123771869420 in words is "four trillion, one hundred twenty-three billion, seven hundred seventy-one million, eight hundred sixty-nine thousand, four hundred twenty".