153866020242 has 48 divisors (see below), whose sum is σ = 346501010016. Its totient is φ = 45488836800.

The previous prime is 153866020183. The next prime is 153866020247. The reversal of 153866020242 is 242020668351.

It is a super-2 number, since 2×153866020242² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 153866020242.

It is not an unprimeable number, because it can be changed into a prime (153866020247) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2554828 + ... + 2614359.

It is an arithmetic number, because the mean of its divisors is an integer number (7218771042).

Almost surely, 2^153866020242 is an apocalyptic number.

153866020242 is an abundant number, since it is smaller than the sum of its proper divisors (192634989774).

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

153866020242 is a wasteful number, since it uses less digits than its factorization.

153866020242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5169255 (or 5169244 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 39.

Adding to 153866020242 its reverse (242020668351), we get a palindrome (395886688593).

The spelling of 153866020242 in words is "one hundred fifty-three billion, eight hundred sixty-six million, twenty thousand, two hundred forty-two".