145424121 has 8 divisors (see below), whose sum is σ = 194420160. Its totient is φ = 96688752.

The previous prime is 145424113. The next prime is 145424159. The reversal of 145424121 is 121424541.

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

It is not a de Polignac number, because 145424121 - 2³ = 145424113 is a prime.

It is a super-2 number, since 2×145424121² = 42296349937245282, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 145424091 and 145424100.

It is not an unprimeable number, because it can be changed into a prime (145426121) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 63861 + ... + 66098.

It is an arithmetic number, because the mean of its divisors is an integer number (24302520).

Almost surely, 2^145424121 is an apocalyptic number.

It is an amenable number.

145424121 is a deficient number, since it is larger than the sum of its proper divisors (48996039).

145424121 is a wasteful number, since it uses less digits than its factorization.

145424121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130335.

The product of its digits is 1280, while the sum is 24.

The square root of 145424121 is about 12059.1923858938. The cubic root of 145424121 is about 525.8705086361.

Adding to 145424121 its reverse (121424541), we get a palindrome (266848662).

The spelling of 145424121 in words is "one hundred forty-five million, four hundred twenty-four thousand, one hundred twenty-one".