42031545 has 16 divisors (see below), whose sum is σ = 67366080. Its totient is φ = 22378304.

The previous prime is 42031543. The next prime is 42031573. The reversal of 42031545 is 54513024.

It is a cyclic number.

It is not a de Polignac number, because 42031545 - 2¹ = 42031543 is a prime.

It is not an unprimeable number, because it can be changed into a prime (42031543) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8086 + ... + 12224.

It is an arithmetic number, because the mean of its divisors is an integer number (4210380).

Almost surely, 2^42031545 is an apocalyptic number.

It is an amenable number.

42031545 is a deficient number, since it is larger than the sum of its proper divisors (25334535).

42031545 is a wasteful number, since it uses less digits than its factorization.

42031545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4824.

The product of its (nonzero) digits is 2400, while the sum is 24.

The square root of 42031545 is about 6483.1739911867. The cubic root of 42031545 is about 347.6896675204.

Adding to 42031545 its reverse (54513024), we get a palindrome (96544569).

The spelling of 42031545 in words is "forty-two million, thirty-one thousand, five hundred forty-five".