542217407522 has 18 divisors (see below), whose sum is σ = 946126767483. Its totient is φ = 232375764852.

The previous prime is 542217407513. The next prime is 542217407531. The reversal of 542217407522 is 225704712245.

It is an interprime number because it is at equal distance from previous prime (542217407513) and next prime (542217407531).

It can be written as a sum of positive squares in only one way, i.e., 271108703761 + 271108703761 = 520681^2 + 520681^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=520681.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 542217407522.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 7252343 + ... + 7326725.

Almost surely, 2^542217407522 is an apocalyptic number.

542217407522 is a deficient number, since it is larger than the sum of its proper divisors (403909359961).

542217407522 is an frugal number, since it uses more digits than its factorization.

542217407522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 148782 (or 74392 counting only the distinct ones).

The product of its (nonzero) digits is 313600, while the sum is 41.

The spelling of 542217407522 in words is "five hundred forty-two billion, two hundred seventeen million, four hundred seven thousand, five hundred twenty-two".