42453787940 has 12 divisors (see below), whose sum is σ = 89152954716. Its totient is φ = 16981515168.

The previous prime is 42453787879. The next prime is 42453787969. The reversal of 42453787940 is 4978735424.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 30200183524 + 12253604416 = 173782^2 + 110696^2 .

It is a super-2 number, since 2×42453787940² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1061344679 + ... + 1061344718.

It is an arithmetic number, because the mean of its divisors is an integer number (7429412893).

Almost surely, 2^42453787940 is an apocalyptic number.

It is an amenable number.

42453787940 is an abundant number, since it is smaller than the sum of its proper divisors (46699166776).

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

42453787940 is a wasteful number, since it uses less digits than its factorization.

42453787940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2122689406 (or 2122689404 counting only the distinct ones).

The product of its (nonzero) digits is 6773760, while the sum is 53.

The spelling of 42453787940 in words is "forty-two billion, four hundred fifty-three million, seven hundred eighty-seven thousand, nine hundred forty".