6426178542 has 96 divisors (see below), whose sum is σ = 16826793984. Its totient is φ = 1733443200.

The previous prime is 6426178487. The next prime is 6426178543. The reversal of 6426178542 is 2458716246.

6426178542 is a `hidden beast` number, since 6 + 42 + 61 + 7 + 8 + 542 = 666.

It is a super-2 number, since 2×6426178542² = 82591541307322491528, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6426178543) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 140083 + ... + 180209.

It is an arithmetic number, because the mean of its divisors is an integer number (175279104).

Almost surely, 2^6426178542 is an apocalyptic number.

6426178542 is a gapful number since it is divisible by the number (62) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 6426178542, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8413396992).

6426178542 is an abundant number, since it is smaller than the sum of its proper divisors (10400615442).

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

6426178542 is a wasteful number, since it uses less digits than its factorization.

6426178542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40214 (or 40211 counting only the distinct ones).

The product of its digits is 645120, while the sum is 45.

The square root of 6426178542 is about 80163.4489153255. The cubic root of 6426178542 is about 1859.1635486312.

The spelling of 6426178542 in words is "six billion, four hundred twenty-six million, one hundred seventy-eight thousand, five hundred forty-two".