405240243130142 has 8 divisors (see below), whose sum is σ = 694697559651696. Its totient is φ = 173674389912912.

The previous prime is 405240243130133. The next prime is 405240243130159. The reversal of 405240243130142 is 241031342042504.

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

It is a super-3 number, since 3×405240243130142³ (a number of 45 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14472865826063 + ... + 14472865826090.

It is an arithmetic number, because the mean of its divisors is an integer number (86837194956462).

Almost surely, 2^{405240243130142} is an apocalyptic number.

405240243130142 is a deficient number, since it is larger than the sum of its proper divisors (289457316521554).

405240243130142 is a wasteful number, since it uses less digits than its factorization.

405240243130142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28945731652162.

The product of its (nonzero) digits is 92160, while the sum is 35.

Adding to 405240243130142 its reverse (241031342042504), we get a palindrome (646271585172646).

The spelling of 405240243130142 in words is "four hundred five trillion, two hundred forty billion, two hundred forty-three million, one hundred thirty thousand, one hundred forty-two".