145305210421242 has 56 divisors (see below), whose sum is σ = 327545440943040. Its totient is φ = 48322691578440.

The previous prime is 145305210421211. The next prime is 145305210421253. The reversal of 145305210421242 is 242124012503541.

145305210421242 is a `hidden beast` number, since 1 + 4 + 5 + 3 + 0 + 521 + 0 + 4 + 2 + 124 + 2 = 666.

It is a super-2 number, since 2×145305210421242² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 145305210421197 and 145305210421206.

It is an unprimeable number.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 114987192 + ... + 116243987.

Almost surely, 2^{145305210421242} is an apocalyptic number.

145305210421242 is an abundant number, since it is smaller than the sum of its proper divisors (182240230521798).

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

145305210421242 is an equidigital number, since it uses as much as digits as its factorization.

145305210421242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 231231630 (or 231231615 counting only the distinct ones).

The product of its (nonzero) digits is 76800, while the sum is 36.

Adding to 145305210421242 its reverse (242124012503541), we get a palindrome (387429222924783).

The spelling of 145305210421242 in words is "one hundred forty-five trillion, three hundred five billion, two hundred ten million, four hundred twenty-one thousand, two hundred forty-two".