7126042420 has 96 divisors (see below), whose sum is σ = 17429852160. Its totient is φ = 2396634240.

The previous prime is 7126042379. The next prime is 7126042423. The reversal of 7126042420 is 242406217.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7126042423) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7524387 + ... + 7525333.

It is an arithmetic number, because the mean of its divisors is an integer number (181560960).

Almost surely, 2^7126042420 is an apocalyptic number.

7126042420 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 7126042420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8714926080).

7126042420 is an abundant number, since it is smaller than the sum of its proper divisors (10303809740).

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

7126042420 is a wasteful number, since it uses less digits than its factorization.

7126042420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1933 (or 1931 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 28.

The square root of 7126042420 is about 84415.8896180097. The cubic root of 7126042420 is about 1924.3444032739.

Adding to 7126042420 its reverse (242406217), we get a palindrome (7368448637).

The spelling of 7126042420 in words is "seven billion, one hundred twenty-six million, forty-two thousand, four hundred twenty".