20302030240542 has 32 divisors (see below), whose sum is σ = 45553638524160. Its totient is φ = 6701641048440.

The previous prime is 20302030240489. The next prime is 20302030240559. The reversal of 20302030240542 is 24504203020302.

It is a happy number.

20302030240542 is a `hidden beast` number, since 2 + 0 + 30 + 20 + 30 + 2 + 40 + 542 = 666.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1825060084 + ... + 1825071207.

It is an arithmetic number, because the mean of its divisors is an integer number (1423551203880).

Almost surely, 2^{20302030240542} is an apocalyptic number.

20302030240542 is an abundant number, since it is smaller than the sum of its proper divisors (25251608283618).

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

20302030240542 is a wasteful number, since it uses less digits than its factorization.

20302030240542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3650131405 (or 3650131399 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 27.

Adding to 20302030240542 its reverse (24504203020302), we get a palindrome (44806233260844).

The spelling of 20302030240542 in words is "twenty trillion, three hundred two billion, thirty million, two hundred forty thousand, five hundred forty-two".