120206221542 has 96 divisors (see below), whose sum is σ = 292329142560. Its totient is φ = 35381952000.

The previous prime is 120206221481. The next prime is 120206221543. The reversal of 120206221542 is 245122602021.

120206221542 is a `hidden beast` number, since 1 + 2 + 0 + 20 + 622 + 15 + 4 + 2 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120206221543) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1826692 + ... + 1891352.

It is an arithmetic number, because the mean of its divisors is an integer number (3045095235).

Almost surely, 2^120206221542 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 120206221542, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (146164571280).

120206221542 is an abundant number, since it is smaller than the sum of its proper divisors (172122921018).

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

120206221542 is a wasteful number, since it uses less digits than its factorization.

120206221542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64950 (or 64947 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 27.

Adding to 120206221542 its reverse (245122602021), we get a palindrome (365328823563).

The spelling of 120206221542 in words is "one hundred twenty billion, two hundred six million, two hundred twenty-one thousand, five hundred forty-two".