42465869 has 2 divisors, whose sum is σ = 42465870. Its totient is φ = 42465868.

The previous prime is 42465853. The next prime is 42465883. The reversal of 42465869 is 96856424.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 38912644 + 3553225 = 6238^2 + 1885^2 .

It is a cyclic number.

It is not a de Polignac number, because 42465869 - 2⁴ = 42465853 is a prime.

It is a super-2 number, since 2×42465869² = 3606700059850322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42465169) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21232934 + 21232935.

It is an arithmetic number, because the mean of its divisors is an integer number (21232935).

Almost surely, 2^42465869 is an apocalyptic number.

It is an amenable number.

42465869 is a deficient number, since it is larger than the sum of its proper divisors (1).

42465869 is an equidigital number, since it uses as much as digits as its factorization.

42465869 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 414720, while the sum is 44.

The square root of 42465869 is about 6516.5841512252. The cubic root of 42465869 is about 348.8831583429.

It can be divided in two parts, 42465 and 869, that added together give a palindrome (43334).

The spelling of 42465869 in words is "forty-two million, four hundred sixty-five thousand, eight hundred sixty-nine".