42542120000 has 70 divisors (see below), whose sum is σ = 105490730598. Its totient is φ = 17016832000.

The previous prime is 42542119957. The next prime is 42542120051. The reversal of 42542120000 is 2124524.

It is a happy number.

42542120000 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 5 ways, for example, as 26694331456 + 15847788544 = 163384^2 + 125888^2 .

It is a Harshad number since it is a multiple of its sum of digits (20).

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 491777 + ... + 571776.

Almost surely, 2^42542120000 is an apocalyptic number.

42542120000 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

42542120000 is an abundant number, since it is smaller than the sum of its proper divisors (62948610598).

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

42542120000 is an equidigital number, since it uses as much as digits as its factorization.

42542120000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1063585 (or 1063560 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 20.

Adding to 42542120000 its reverse (2124524), we get a palindrome (42544244524).

The spelling of 42542120000 in words is "forty-two billion, five hundred forty-two million, one hundred twenty thousand".