42015269 has 2 divisors, whose sum is σ = 42015270. Its totient is φ = 42015268.

The previous prime is 42015263. The next prime is 42015271. The reversal of 42015269 is 96251024.

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., 30658369 + 11356900 = 5537^2 + 3370^2 .

It is a cyclic number.

It is not a de Polignac number, because 42015269 - 2²⁴ = 25238053 is a prime.

It is a super-2 number, since 2×42015269² = 3530565658284722, which contains 22 as substring.

Together with 42015271, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42015263) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21007634 + 21007635.

It is an arithmetic number, because the mean of its divisors is an integer number (21007635).

Almost surely, 2^42015269 is an apocalyptic number.

It is an amenable number.

42015269 is a deficient number, since it is larger than the sum of its proper divisors (1).

42015269 is an equidigital number, since it uses as much as digits as its factorization.

42015269 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 42015269 is about 6481.9186202852. The cubic root of 42015269 is about 347.6447827587.

The spelling of 42015269 in words is "forty-two million, fifteen thousand, two hundred sixty-nine".