242120545405 has 8 divisors (see below), whose sum is σ = 303177030912. Its totient is φ = 185274852048.

The previous prime is 242120545393. The next prime is 242120545427. The reversal of 242120545405 is 504545021242.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 242120545405 - 2⁹ = 242120544893 is a prime.

It is a super-2 number, since 2×242120545405² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

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, 1052697909 + ... + 1052698138.

It is an arithmetic number, because the mean of its divisors is an integer number (37897128864).

Almost surely, 2^242120545405 is an apocalyptic number.

It is an amenable number.

242120545405 is a deficient number, since it is larger than the sum of its proper divisors (61056485507).

242120545405 is a wasteful number, since it uses less digits than its factorization.

242120545405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2105396075.

The product of its (nonzero) digits is 64000, while the sum is 34.

Adding to 242120545405 its reverse (504545021242), we get a palindrome (746665566647).

The spelling of 242120545405 in words is "two hundred forty-two billion, one hundred twenty million, five hundred forty-five thousand, four hundred five".