145240004 has 48 divisors (see below), whose sum is σ = 323635200. Its totient is φ = 55472256.

The previous prime is 145240003. The next prime is 145240013. The reversal of 145240004 is 400042541.

It is not an unprimeable number, because it can be changed into a prime (145240003) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3677 + ... + 17435.

It is an arithmetic number, because the mean of its divisors is an integer number (6742400).

Almost surely, 2^145240004 is an apocalyptic number.

145240004 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 145240004, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (161817600).

145240004 is an abundant number, since it is smaller than the sum of its proper divisors (178395196).

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

145240004 is a wasteful number, since it uses less digits than its factorization.

145240004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13812 (or 13810 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 20.

The square root of 145240004 is about 12051.5560820999. The cubic root of 145240004 is about 525.6484854268.

Adding to 145240004 its reverse (400042541), we get a palindrome (545282545).

The spelling of 145240004 in words is "one hundred forty-five million, two hundred forty thousand, four".