540402145 has 12 divisors (see below), whose sum is σ = 653726484. Its totient is φ = 428853600.

The previous prime is 540402139. The next prime is 540402157. The reversal of 540402145 is 541204045.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 205951201 + 334450944 = 14351^2 + 18288^2 .

It is not a de Polignac number, because 540402145 - 2²⁹ = 3531233 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 77295 + ... + 83995.

It is an arithmetic number, because the mean of its divisors is an integer number (54477207).

Almost surely, 2^540402145 is an apocalyptic number.

It is an amenable number.

540402145 is a deficient number, since it is larger than the sum of its proper divisors (113324339).

540402145 is an equidigital number, since it uses as much as digits as its factorization.

540402145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6960 (or 6833 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 25.

The square root of 540402145 is about 23246.5512495940. The cubic root of 540402145 is about 814.5273810175.

The spelling of 540402145 in words is "five hundred forty million, four hundred two thousand, one hundred forty-five".