145023040 has 28 divisors (see below), whose sum is σ = 345336876. Its totient is φ = 58009088.

The previous prime is 145023013. The next prime is 145023071. The reversal of 145023040 is 40320541.

It can be written as a sum of positive squares in 2 ways, for example, as 46457856 + 98565184 = 6816^2 + 9928^2 .

It is a junction number, because it is equal to n+sod(n) for n = 145022999 and 145023017.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 226279 + ... + 226918.

Almost surely, 2^145023040 is an apocalyptic number.

145023040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

145023040 is an abundant number, since it is smaller than the sum of its proper divisors (200313836).

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

145023040 is an equidigital number, since it uses as much as digits as its factorization.

145023040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 453214 (or 453204 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 19.

The square root of 145023040 is about 12042.5512247198. The cubic root of 145023040 is about 525.3866116755.

Adding to 145023040 its reverse (40320541), we get a palindrome (185343581).

The spelling of 145023040 in words is "one hundred forty-five million, twenty-three thousand, forty".