145132420 has 48 divisors (see below), whose sum is σ = 311573808. Its totient is φ = 56770560.

The previous prime is 145132397. The next prime is 145132433. The reversal of 145132420 is 24231541.

It can be written as a sum of positive squares in 8 ways, for example, as 38340864 + 106791556 = 6192^2 + 10334^2 .

It is a junction number, because it is equal to n+sod(n) for n = 145132391 and 145132400.

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 15 ways as a sum of consecutive naturals, for example, 410964 + ... + 411316.

It is an arithmetic number, because the mean of its divisors is an integer number (6491121).

Almost surely, 2^145132420 is an apocalyptic number.

145132420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

145132420 is an abundant number, since it is smaller than the sum of its proper divisors (166441388).

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

145132420 is a wasteful number, since it uses less digits than its factorization.

145132420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 760 (or 758 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 145132420 is about 12047.0917652353. The cubic root of 145132420 is about 525.5186650513.

Adding to 145132420 its reverse (24231541), we get a palindrome (169363961).

The spelling of 145132420 in words is "one hundred forty-five million, one hundred thirty-two thousand, four hundred twenty".