242005400451 has 24 divisors (see below), whose sum is σ = 361189335936. Its totient is φ = 155981185920.

The previous prime is 242005400437. The next prime is 242005400471. The reversal of 242005400451 is 154004500242.

242005400451 is a `hidden beast` number, since 2 + 4 + 200 + 5 + 4 + 0 + 0 + 451 = 666.

It is not a de Polignac number, because 242005400451 - 2⁶ = 242005400387 is a prime.

It is a super-2 number, since 2×242005400451² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (242005400471) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 131640 + ... + 708053.

It is an arithmetic number, because the mean of its divisors is an integer number (15049555664).

Almost surely, 2^242005400451 is an apocalyptic number.

242005400451 is a deficient number, since it is larger than the sum of its proper divisors (119183935485).

242005400451 is a wasteful number, since it uses less digits than its factorization.

242005400451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 840763 (or 840760 counting only the distinct ones).

The product of its (nonzero) digits is 6400, while the sum is 27.

Adding to 242005400451 its reverse (154004500242), we get a palindrome (396009900693).

The spelling of 242005400451 in words is "two hundred forty-two billion, five million, four hundred thousand, four hundred fifty-one".