42030545 has 16 divisors (see below), whose sum is σ = 55728000. Its totient is φ = 30269184.

The previous prime is 42030533. The next prime is 42030559. The reversal of 42030545 is 54503024.

It is a cyclic number.

It is not a de Polignac number, because 42030545 - 2⁶ = 42030481 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a self number, because there is not a number n which added to its sum of digits gives 42030545.

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, 8795 + ... + 12704.

It is an arithmetic number, because the mean of its divisors is an integer number (3483000).

Almost surely, 2^42030545 is an apocalyptic number.

It is an amenable number.

42030545 is a deficient number, since it is larger than the sum of its proper divisors (13697455).

42030545 is a wasteful number, since it uses less digits than its factorization.

42030545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21544.

The product of its (nonzero) digits is 2400, while the sum is 23.

The square root of 42030545 is about 6483.0968680099. The cubic root of 42030545 is about 347.6869101277.

Adding to 42030545 its reverse (54503024), we get a palindrome (96533569).

The spelling of 42030545 in words is "forty-two million, thirty thousand, five hundred forty-five".