145394424 has 48 divisors (see below), whose sum is σ = 450031920. Its totient is φ = 41541120.

The previous prime is 145394419. The next prime is 145394437. The reversal of 145394424 is 424493541.

145394424 is a `hidden beast` number, since 145 + 3 + 94 + 424 = 666.

It is a super-2 number, since 2×145394424² = 42279077060583552, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 143737 + ... + 144744.

It is an arithmetic number, because the mean of its divisors is an integer number (9375665).

Almost surely, 2^145394424 is an apocalyptic number.

145394424 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

145394424 is an abundant number, since it is smaller than the sum of its proper divisors (304637496).

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

145394424 is a wasteful number, since it uses less digits than its factorization.

145394424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 288500 (or 288493 counting only the distinct ones).

The product of its digits is 69120, while the sum is 36.

The square root of 145394424 is about 12057.9610216653. The cubic root of 145394424 is about 525.8347102657.

The spelling of 145394424 in words is "one hundred forty-five million, three hundred ninety-four thousand, four hundred twenty-four".