145244407 has 12 divisors (see below), whose sum is σ = 182456848. Its totient is φ = 113176800.

The previous prime is 145244401. The next prime is 145244443. The reversal of 145244407 is 704442541.

It is not a de Polignac number, because 145244407 - 2⁷ = 145244279 is a prime.

It is a hoax number, since the sum of its digits (31) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145244401) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 84894 + ... + 86587.

Almost surely, 2^145244407 is an apocalyptic number.

145244407 is a deficient number, since it is larger than the sum of its proper divisors (37212441).

145244407 is a wasteful number, since it uses less digits than its factorization.

145244407 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 171510 (or 171499 counting only the distinct ones).

The product of its (nonzero) digits is 17920, while the sum is 31.

The square root of 145244407 is about 12051.7387542213. The cubic root of 145244407 is about 525.6537971105.

Adding to 145244407 its reverse (704442541), we get a palindrome (849686948).

The spelling of 145244407 in words is "one hundred forty-five million, two hundred forty-four thousand, four hundred seven".