145403924 has 24 divisors (see below), whose sum is σ = 272845440. Its totient is φ = 67556736.

The previous prime is 145403911. The next prime is 145403933. The reversal of 145403924 is 429304541.

It is a super-3 number, since 3×145403924³ (a number of 25 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8162 + ... + 18905.

It is an arithmetic number, because the mean of its divisors is an integer number (11368560).

Almost surely, 2^145403924 is an apocalyptic number.

It is an amenable number.

145403924 is a deficient number, since it is larger than the sum of its proper divisors (127441516).

145403924 is a wasteful number, since it uses less digits than its factorization.

145403924 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27167 (or 27165 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 32.

The square root of 145403924 is about 12058.3549458456. The cubic root of 145403924 is about 525.8461626099.

The spelling of 145403924 in words is "one hundred forty-five million, four hundred three thousand, nine hundred twenty-four".