84240238 has 4 divisors (see below), whose sum is σ = 126360360. Its totient is φ = 42120118.

The previous prime is 84240209. The next prime is 84240251. The reversal of 84240238 is 83204248.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21060058 + ... + 21060061.

It is an arithmetic number, because the mean of its divisors is an integer number (31590090).

Almost surely, 2^84240238 is an apocalyptic number.

84240238 is a deficient number, since it is larger than the sum of its proper divisors (42120122).

84240238 is a wasteful number, since it uses less digits than its factorization.

84240238 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42120121.

The product of its (nonzero) digits is 12288, while the sum is 31.

The square root of 84240238 is about 9178.2480899135. The cubic root of 84240238 is about 438.3690272787.

The spelling of 84240238 in words is "eighty-four million, two hundred forty thousand, two hundred thirty-eight".