42230501 has 2 divisors, whose sum is σ = 42230502. Its totient is φ = 42230500.

The previous prime is 42230479. The next prime is 42230509. The reversal of 42230501 is 10503224.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 39753025 + 2477476 = 6305^2 + 1574^2 .

It is a cyclic number.

It is not a de Polignac number, because 42230501 - 2⁶ = 42230437 is a prime.

It is a super-2 number, since 2×42230501² = 3566830429422002, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 42230501.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42230509) by changing a digit.

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 as a sum of consecutive naturals, namely, 21115250 + 21115251.

It is an arithmetic number, because the mean of its divisors is an integer number (21115251).

Almost surely, 2^42230501 is an apocalyptic number.

It is an amenable number.

42230501 is a deficient number, since it is larger than the sum of its proper divisors (1).

42230501 is an equidigital number, since it uses as much as digits as its factorization.

42230501 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 240, while the sum is 17.

The square root of 42230501 is about 6498.4999038240. The cubic root of 42230501 is about 348.2373996682.

Adding to 42230501 its reverse (10503224), we get a palindrome (52733725).

The spelling of 42230501 in words is "forty-two million, two hundred thirty thousand, five hundred one".