145276420 has 12 divisors (see below), whose sum is σ = 305080524. Its totient is φ = 58110560.

The previous prime is 145276387. The next prime is 145276459. The reversal of 145276420 is 24672541.

It can be written as a sum of positive squares in 2 ways, for example, as 87272964 + 58003456 = 9342^2 + 7616^2 .

It is a super-2 number, since 2×145276420² = 42210476416032800, which contains 22 as substring.

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 3 ways as a sum of consecutive naturals, for example, 3631891 + ... + 3631930.

It is an arithmetic number, because the mean of its divisors is an integer number (25423377).

Almost surely, 2^145276420 is an apocalyptic number.

145276420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

145276420 is an abundant number, since it is smaller than the sum of its proper divisors (159804104).

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

145276420 is a wasteful number, since it uses less digits than its factorization.

145276420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7263830 (or 7263828 counting only the distinct ones).

The product of its (nonzero) digits is 13440, while the sum is 31.

The square root of 145276420 is about 12053.0668296496. The cubic root of 145276420 is about 525.6924136722.

The spelling of 145276420 in words is "one hundred forty-five million, two hundred seventy-six thousand, four hundred twenty".