243130102170542 has 4 divisors (see below), whose sum is σ = 364695153255816. Its totient is φ = 121565051085270.

The previous prime is 243130102170523. The next prime is 243130102170547. The reversal of 243130102170542 is 245071201031342.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×243130102170542² (a number of 30 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243130102170547) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60782525542634 + ... + 60782525542637.

It is an arithmetic number, because the mean of its divisors is an integer number (91173788313954).

Almost surely, 2^{243130102170542} is an apocalyptic number.

243130102170542 is a deficient number, since it is larger than the sum of its proper divisors (121565051085274).

243130102170542 is a wasteful number, since it uses less digits than its factorization.

243130102170542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121565051085273.

The product of its (nonzero) digits is 40320, while the sum is 35.

The spelling of 243130102170542 in words is "two hundred forty-three trillion, one hundred thirty billion, one hundred two million, one hundred seventy thousand, five hundred forty-two".