542636242620 has 48 divisors (see below), whose sum is σ = 1522426416000. Its totient is φ = 144413004096.

The previous prime is 542636242607. The next prime is 542636242661. The reversal of 542636242620 is 26242636245.

It is a happy number.

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, 9032122 + ... + 9092001.

It is an arithmetic number, because the mean of its divisors is an integer number (31717217000).

Almost surely, 2^542636242620 is an apocalyptic number.

It is an amenable number.

542636242620 is an abundant number, since it is smaller than the sum of its proper divisors (979790173380).

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

542636242620 is a wasteful number, since it uses less digits than its factorization.

542636242620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18124634 (or 18124632 counting only the distinct ones).

The product of its (nonzero) digits is 829440, while the sum is 42.

Adding to 542636242620 its reverse (26242636245), we get a palindrome (568878878865).

The spelling of 542636242620 in words is "five hundred forty-two billion, six hundred thirty-six million, two hundred forty-two thousand, six hundred twenty".