42791229408 has 48 divisors (see below), whose sum is σ = 112650773760. Its totient is φ = 14222626176.

The previous prime is 42791229401. The next prime is 42791229413. The reversal of 42791229408 is 80492219724.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (48).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42791229401) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 608968 + ... + 675591.

It is an arithmetic number, because the mean of its divisors is an integer number (2346891120).

Almost surely, 2^42791229408 is an apocalyptic number.

42791229408 is a gapful number since it is divisible by the number (48) formed by its first and last digit.

It is an amenable number.

42791229408 is an abundant number, since it is smaller than the sum of its proper divisors (69859544352).

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

42791229408 is a wasteful number, since it uses less digits than its factorization.

42791229408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1284919 (or 1284911 counting only the distinct ones).

The product of its (nonzero) digits is 580608, while the sum is 48.

The spelling of 42791229408 in words is "forty-two billion, seven hundred ninety-one million, two hundred twenty-nine thousand, four hundred eight".