84121252 has 6 divisors (see below), whose sum is σ = 147212198. Its totient is φ = 42060624.

The previous prime is 84121249. The next prime is 84121277. The reversal of 84121252 is 25212148.

It can be written as a sum of positive squares in only one way, i.e., 66194496 + 17926756 = 8136^2 + 4234^2 .

It is an unprimeable number.

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, 10515153 + ... + 10515160.

Almost surely, 2^84121252 is an apocalyptic number.

It is an amenable number.

84121252 is a deficient number, since it is larger than the sum of its proper divisors (63090946).

84121252 is a wasteful number, since it uses less digits than its factorization.

84121252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21030317 (or 21030315 counting only the distinct ones).

The product of its digits is 1280, while the sum is 25.

The square root of 84121252 is about 9171.7638434491. The cubic root of 84121252 is about 438.1625370649.

The spelling of 84121252 in words is "eighty-four million, one hundred twenty-one thousand, two hundred fifty-two".