145442304 has 240 divisors, whose sum is σ = 500467968. Its totient is φ = 41306112.

The previous prime is 145442281. The next prime is 145442309. The reversal of 145442304 is 403244541.

It is a happy number.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145442309) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 870829 + ... + 870995.

Almost surely, 2^145442304 is an apocalyptic number.

145442304 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 145442304, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (250233984).

145442304 is an abundant number, since it is smaller than the sum of its proper divisors (355025664).

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

145442304 is an frugal number, since it uses more digits than its factorization.

145442304 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 207 (or 179 counting only the distinct ones).

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

The square root of 145442304 is about 12059.9462685370. The cubic root of 145442304 is about 525.8924250026.

Adding to 145442304 its reverse (403244541), we get a palindrome (548686845).

The spelling of 145442304 in words is "one hundred forty-five million, four hundred forty-two thousand, three hundred four".