84381254 has 4 divisors (see below), whose sum is σ = 126571884. Its totient is φ = 42190626.

The previous prime is 84381229. The next prime is 84381257. The reversal of 84381254 is 45218348.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×84381254² = 14240392053225032, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84381257) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21095312 + ... + 21095315.

It is an arithmetic number, because the mean of its divisors is an integer number (31642971).

Almost surely, 2^84381254 is an apocalyptic number.

84381254 is a deficient number, since it is larger than the sum of its proper divisors (42190630).

84381254 is a wasteful number, since it uses less digits than its factorization.

84381254 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42190629.

The product of its digits is 30720, while the sum is 35.

The square root of 84381254 is about 9185.9269537701. The cubic root of 84381254 is about 438.6134970905.

The spelling of 84381254 in words is "eighty-four million, three hundred eighty-one thousand, two hundred fifty-four".