42023545 has 8 divisors (see below), whose sum is σ = 51119496. Its totient is φ = 33158016.

The previous prime is 42023537. The next prime is 42023567. The reversal of 42023545 is 54532024.

It can be written as a sum of positive squares in 4 ways, for example, as 7225344 + 34798201 = 2688^2 + 5899^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 42023545 - 2³ = 42023537 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 57202 + ... + 57931.

It is an arithmetic number, because the mean of its divisors is an integer number (6389937).

Almost surely, 2^42023545 is an apocalyptic number.

It is an amenable number.

42023545 is a deficient number, since it is larger than the sum of its proper divisors (9095951).

42023545 is a wasteful number, since it uses less digits than its factorization.

42023545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115211.

The product of its (nonzero) digits is 4800, while the sum is 25.

The square root of 42023545 is about 6482.5569800812. The cubic root of 42023545 is about 347.6676071541.

Adding to 42023545 its reverse (54532024), we get a palindrome (96555569).

The spelling of 42023545 in words is "forty-two million, twenty-three thousand, five hundred forty-five".