42249194640 has 60 divisors (see below), whose sum is σ = 141886881084. Its totient is φ = 11266451712.

The previous prime is 42249194633. The next prime is 42249194671. The reversal of 42249194640 is 4649194224.

42249194640 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 9831912336 + 32417282304 = 99156^2 + 180048^2 .

It is a tau number, because it is divible by the number of its divisors (60).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 29338999 + ... + 29340438.

Almost surely, 2^42249194640 is an apocalyptic number.

42249194640 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

42249194640 is an abundant number, since it is smaller than the sum of its proper divisors (99637686444).

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

42249194640 is a wasteful number, since it uses less digits than its factorization.

42249194640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58679456 (or 58679447 counting only the distinct ones).

The product of its (nonzero) digits is 497664, while the sum is 45.

The spelling of 42249194640 in words is "forty-two billion, two hundred forty-nine million, one hundred ninety-four thousand, six hundred forty".