42242029 has 2 divisors, whose sum is σ = 42242030. Its totient is φ = 42242028.

The previous prime is 42242023. The next prime is 42242033. The reversal of 42242029 is 92024224.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 37393225 + 4848804 = 6115^2 + 2202^2 .

It is a cyclic number.

It is not a de Polignac number, because 42242029 - 2³ = 42242021 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 42241994 and 42242012.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42242021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21121014 + 21121015.

It is an arithmetic number, because the mean of its divisors is an integer number (21121015).

Almost surely, 2^42242029 is an apocalyptic number.

It is an amenable number.

42242029 is a deficient number, since it is larger than the sum of its proper divisors (1).

42242029 is an equidigital number, since it uses as much as digits as its factorization.

42242029 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2304, while the sum is 25.

The square root of 42242029 is about 6499.3868172313. The cubic root of 42242029 is about 348.2690838413.

The spelling of 42242029 in words is "forty-two million, two hundred forty-two thousand, twenty-nine".