100145050542 has 128 divisors (see below), whose sum is σ = 242527219200. Its totient is φ = 30512060928.

The previous prime is 100145050541. The next prime is 100145050547. The reversal of 100145050542 is 245050541001.

100145050542 is a `hidden beast` number, since 10 + 0 + 14 + 50 + 50 + 542 = 666.

It is a super-2 number, since 2×100145050542² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100145050541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 4484308 + ... + 4506584.

It is an arithmetic number, because the mean of its divisors is an integer number (1894743900).

Almost surely, 2^100145050542 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 100145050542, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (121263609600).

100145050542 is an abundant number, since it is smaller than the sum of its proper divisors (142382168658).

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

100145050542 is a wasteful number, since it uses less digits than its factorization.

100145050542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22447 (or 22441 counting only the distinct ones).

The product of its (nonzero) digits is 4000, while the sum is 27.

Adding to 100145050542 its reverse (245050541001), we get a palindrome (345195591543).

The spelling of 100145050542 in words is "one hundred billion, one hundred forty-five million, fifty thousand, five hundred forty-two".