84019142 has 4 divisors (see below), whose sum is σ = 126028716. Its totient is φ = 42009570.

The previous prime is 84019141. The next prime is 84019147. The reversal of 84019142 is 24191048.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84019141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21004784 + ... + 21004787.

It is an arithmetic number, because the mean of its divisors is an integer number (31507179).

Almost surely, 2^84019142 is an apocalyptic number.

84019142 is a deficient number, since it is larger than the sum of its proper divisors (42009574).

84019142 is a wasteful number, since it uses less digits than its factorization.

84019142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42009573.

The product of its (nonzero) digits is 2304, while the sum is 29.

The square root of 84019142 is about 9166.1956121392. The cubic root of 84019142 is about 437.9851784286.

The spelling of 84019142 in words is "eighty-four million, nineteen thousand, one hundred forty-two".