111542420000 has 480 divisors, whose sum is σ = 313393981824. Its totient is φ = 38707200000.

The previous prime is 111542419951. The next prime is 111542420027. The reversal of 111542420000 is 24245111.

It is a happy number.

It is a super-3 number, since 3×111542420000³ (a number of 34 digits) contains 333 as substring. Note that it is a super-d number also for d = 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 79 ways as a sum of consecutive naturals, for example, 577939904 + ... + 577940096.

Almost surely, 2^111542420000 is an apocalyptic number.

111542420000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 111542420000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (156696990912).

111542420000 is an abundant number, since it is smaller than the sum of its proper divisors (201851561824).

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

111542420000 is a wasteful number, since it uses less digits than its factorization.

111542420000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 342 (or 319 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 20.

Adding to 111542420000 its reverse (24245111), we get a palindrome (111566665111).

The spelling of 111542420000 in words is "one hundred eleven billion, five hundred forty-two million, four hundred twenty thousand".