242100520174542 has 16 divisors (see below), whose sum is σ = 487735354513872. Its totient is φ = 80111121030720.

The previous prime is 242100520174523. The next prime is 242100520174559. The reversal of 242100520174542 is 245471025001242.

It is a super-2 number, since 2×242100520174542² (a number of 30 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 242100520174542.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 147263089309 + ... + 147263090952.

It is an arithmetic number, because the mean of its divisors is an integer number (30483459657117).

Almost surely, 2^{242100520174542} is an apocalyptic number.

242100520174542 is an abundant number, since it is smaller than the sum of its proper divisors (245634834339330).

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

242100520174542 is a wasteful number, since it uses less digits than its factorization.

242100520174542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 294526180403.

The product of its (nonzero) digits is 179200, while the sum is 39.

Adding to 242100520174542 its reverse (245471025001242), we get a palindrome (487571545175784).

The spelling of 242100520174542 in words is "two hundred forty-two trillion, one hundred billion, five hundred twenty million, one hundred seventy-four thousand, five hundred forty-two".