42015629 has 2 divisors, whose sum is σ = 42015630. Its totient is φ = 42015628.

The previous prime is 42015613. The next prime is 42015667. The reversal of 42015629 is 92651024.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 35880100 + 6135529 = 5990^2 + 2477^2 .

It is a cyclic number.

It is not a de Polignac number, because 42015629 - 2⁴ = 42015613 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42015329) 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, 21007814 + 21007815.

It is an arithmetic number, because the mean of its divisors is an integer number (21007815).

Almost surely, 2^42015629 is an apocalyptic number.

It is an amenable number.

42015629 is a deficient number, since it is larger than the sum of its proper divisors (1).

42015629 is an equidigital number, since it uses as much as digits as its factorization.

42015629 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4320, while the sum is 29.

The square root of 42015629 is about 6481.9463897814. The cubic root of 42015629 is about 347.6457756657.

The spelling of 42015629 in words is "forty-two million, fifteen thousand, six hundred twenty-nine".