42251701 has 2 divisors, whose sum is σ = 42251702. Its totient is φ = 42251700.

The previous prime is 42251639. The next prime is 42251767. The reversal of 42251701 is 10715224.

It is a happy number.

42251701 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 25654225 + 16597476 = 5065^2 + 4074^2 .

It is a cyclic number.

It is not a de Polignac number, because 42251701 - 2⁹ = 42251189 is a prime.

It is equal to p_2562016 and since 42251701 and 2562016 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42251401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21125850 + 21125851.

It is an arithmetic number, because the mean of its divisors is an integer number (21125851).

Almost surely, 2^42251701 is an apocalyptic number.

It is an amenable number.

42251701 is a deficient number, since it is larger than the sum of its proper divisors (1).

42251701 is an equidigital number, since it uses as much as digits as its factorization.

42251701 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 560, while the sum is 22.

The square root of 42251701 is about 6500.1308448369. The cubic root of 42251701 is about 348.2956624377.

Adding to 42251701 its reverse (10715224), we get a palindrome (52966925).

The spelling of 42251701 in words is "forty-two million, two hundred fifty-one thousand, seven hundred one".