42154573 has 2 divisors, whose sum is σ = 42154574. Its totient is φ = 42154572.

The previous prime is 42154547. The next prime is 42154579. The reversal of 42154573 is 37545124.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 26811684 + 15342889 = 5178^2 + 3917^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42154573 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42154579) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21077286 + 21077287.

It is an arithmetic number, because the mean of its divisors is an integer number (21077287).

Almost surely, 2^42154573 is an apocalyptic number.

It is an amenable number.

42154573 is a deficient number, since it is larger than the sum of its proper divisors (1).

42154573 is an equidigital number, since it uses as much as digits as its factorization.

42154573 is an evil number, because the sum of its binary digits is even.

The product of its digits is 16800, while the sum is 31.

The square root of 42154573 is about 6492.6553119660. The cubic root of 42154573 is about 348.0285708916.

Adding to 42154573 its reverse (37545124), we get a palindrome (79699697).

The spelling of 42154573 in words is "forty-two million, one hundred fifty-four thousand, five hundred seventy-three".