145424524142121 has 32 divisors (see below), whose sum is σ = 221684654607360. Its totient is φ = 83067713822016.

The previous prime is 145424524142119. The next prime is 145424524142197. The reversal of 145424524142121 is 121241425424541.

It is not a de Polignac number, because 145424524142121 - 2¹ = 145424524142119 is a prime.

It is a super-2 number, since 2×145424524142121² (a number of 29 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (145424524152121) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1369047750 + ... + 1369153968.

It is an arithmetic number, because the mean of its divisors is an integer number (6927645456480).

Almost surely, 2^{145424524142121} is an apocalyptic number.

It is an amenable number.

145424524142121 is a deficient number, since it is larger than the sum of its proper divisors (76260130465239).

145424524142121 is a wasteful number, since it uses less digits than its factorization.

145424524142121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130733.

The product of its digits is 409600, while the sum is 42.

Adding to 145424524142121 its reverse (121241425424541), we get a palindrome (266665949566662).

The spelling of 145424524142121 in words is "one hundred forty-five trillion, four hundred twenty-four billion, five hundred twenty-four million, one hundred forty-two thousand, one hundred twenty-one".