145403424 has 168 divisors, whose sum is σ = 449511552. Its totient is φ = 46189440.

The previous prime is 145403413. The next prime is 145403441. The reversal of 145403424 is 424304541.

It is a happy number.

It is a super-2 number, since 2×145403424² = 42284311421847552, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 536409 + ... + 536679.

It is an arithmetic number, because the mean of its divisors is an integer number (2675664).

Almost surely, 2^145403424 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 145403424, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (224755776).

145403424 is an abundant number, since it is smaller than the sum of its proper divisors (304108128).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

145403424 is an equidigital number, since it uses as much as digits as its factorization.

145403424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 322 (or 299 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 27.

The square root of 145403424 is about 12058.3342133149. The cubic root of 145403424 is about 525.8455598674.

Adding to 145403424 its reverse (424304541), we get a palindrome (569707965).

The spelling of 145403424 in words is "one hundred forty-five million, four hundred three thousand, four hundred twenty-four".