42015253249 has 2 divisors, whose sum is σ = 42015253250. Its totient is φ = 42015253248.

The previous prime is 42015253237. The next prime is 42015253303. The reversal of 42015253249 is 94235251024.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 38796393024 + 3218860225 = 196968^2 + 56735^2 .

It is a cyclic number.

It is not a de Polignac number, because 42015253249 - 2³³ = 33425318657 is a prime.

It is not a weakly prime, because it can be changed into another prime (42015259249) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21007626624 + 21007626625.

It is an arithmetic number, because the mean of its divisors is an integer number (21007626625).

Almost surely, 2^42015253249 is an apocalyptic number.

It is an amenable number.

42015253249 is a deficient number, since it is larger than the sum of its proper divisors (1).

42015253249 is an equidigital number, since it uses as much as digits as its factorization.

42015253249 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 86400, while the sum is 37.

The spelling of 42015253249 in words is "forty-two billion, fifteen million, two hundred fifty-three thousand, two hundred forty-nine".