42456891138 has 8 divisors (see below), whose sum is σ = 84913782288. Its totient is φ = 14152297044.

The previous prime is 42456891137. The next prime is 42456891143. The reversal of 42456891138 is 83119865424.

It is a sphenic number, since it is the product of 3 distinct primes.

42456891138 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (42456891137) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3538074256 + ... + 3538074267.

It is an arithmetic number, because the mean of its divisors is an integer number (10614222786).

Almost surely, 2^42456891138 is an apocalyptic number.

42456891138 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

42456891138 is a wasteful number, since it uses less digits than its factorization.

42456891138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7076148528.

The product of its digits is 1658880, while the sum is 51.

The spelling of 42456891138 in words is "forty-two billion, four hundred fifty-six million, eight hundred ninety-one thousand, one hundred thirty-eight".