145124969 has 4 divisors (see below), whose sum is σ = 158318160. Its totient is φ = 131931780.

The previous prime is 145124927. The next prime is 145125017. The reversal of 145124969 is 969421541.

145124969 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-145124969 is a prime.

It is a super-2 number, since 2×145124969² = 42122513254501922, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (145121969) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6596579 + ... + 6596600.

It is an arithmetic number, because the mean of its divisors is an integer number (39579540).

Almost surely, 2^145124969 is an apocalyptic number.

It is an amenable number.

145124969 is a deficient number, since it is larger than the sum of its proper divisors (13193191).

145124969 is a wasteful number, since it uses less digits than its factorization.

145124969 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13193190.

The product of its digits is 77760, while the sum is 41.

The square root of 145124969 is about 12046.7825165062. The cubic root of 145124969 is about 525.5096716401.

The spelling of 145124969 in words is "one hundred forty-five million, one hundred twenty-four thousand, nine hundred sixty-nine".