84130542 has 16 divisors (see below), whose sum is σ = 186956880. Its totient is φ = 28043496.

The previous prime is 84130511. The next prime is 84130547. The reversal of 84130542 is 24503148.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84130547) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 778933 + ... + 779040.

It is an arithmetic number, because the mean of its divisors is an integer number (11684805).

Almost surely, 2^84130542 is an apocalyptic number.

84130542 is an abundant number, since it is smaller than the sum of its proper divisors (102826338).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

84130542 is a wasteful number, since it uses less digits than its factorization.

84130542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1557984 (or 1557978 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 27.

The square root of 84130542 is about 9172.2702751282. The cubic root of 84130542 is about 438.1786660852.

The spelling of 84130542 in words is "eighty-four million, one hundred thirty thousand, five hundred forty-two".