84242153 has 2 divisors, whose sum is σ = 84242154. Its totient is φ = 84242152.

The previous prime is 84242141. The next prime is 84242237. The reversal of 84242153 is 35124248.

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., 79798489 + 4443664 = 8933^2 + 2108^2 .

It is a cyclic number.

It is not a de Polignac number, because 84242153 - 2¹² = 84238057 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (84242113) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42121076 + 42121077.

It is an arithmetic number, because the mean of its divisors is an integer number (42121077).

Almost surely, 2^84242153 is an apocalyptic number.

It is an amenable number.

84242153 is a deficient number, since it is larger than the sum of its proper divisors (1).

84242153 is an equidigital number, since it uses as much as digits as its factorization.

84242153 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7680, while the sum is 29.

The square root of 84242153 is about 9178.3524120618. The cubic root of 84242153 is about 438.3723490100.

The spelling of 84242153 in words is "eighty-four million, two hundred forty-two thousand, one hundred fifty-three".