215142049 has 2 divisors, whose sum is σ = 215142050. Its totient is φ = 215142048.

The previous prime is 215142017. The next prime is 215142061. The reversal of 215142049 is 940241512.

215142049 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 201214225 + 13927824 = 14185^2 + 3732^2 .

It is a cyclic number.

It is not a de Polignac number, because 215142049 - 2⁵ = 215142017 is a prime.

It is a super-2 number, since 2×215142049² = 92572202495836802, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (215142079) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 107571024 + 107571025.

It is an arithmetic number, because the mean of its divisors is an integer number (107571025).

Almost surely, 2^215142049 is an apocalyptic number.

It is an amenable number.

215142049 is a deficient number, since it is larger than the sum of its proper divisors (1).

215142049 is an equidigital number, since it uses as much as digits as its factorization.

215142049 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2880, while the sum is 28.

The square root of 215142049 is about 14667.7213295045. The cubic root of 215142049 is about 599.2045468157.

The spelling of 215142049 in words is "two hundred fifteen million, one hundred forty-two thousand, forty-nine".