42126758320 has 40 divisors (see below), whose sum is σ = 98298355824. Its totient is φ = 16789861632.

The previous prime is 42126758243. The next prime is 42126758321. The reversal of 42126758320 is 2385762124.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (40).

It is not an unprimeable number, because it can be changed into a prime (42126758321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 928354 + ... + 972673.

Almost surely, 2^42126758320 is an apocalyptic number.

42126758320 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

42126758320 is an abundant number, since it is smaller than the sum of its proper divisors (56171597504).

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

42126758320 is a wasteful number, since it uses less digits than its factorization.

42126758320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1901317 (or 1901311 counting only the distinct ones).

The product of its (nonzero) digits is 161280, while the sum is 40.

The spelling of 42126758320 in words is "forty-two billion, one hundred twenty-six million, seven hundred fifty-eight thousand, three hundred twenty".