102543042 has 32 divisors (see below), whose sum is σ = 234768384. Its totient is φ = 29250000.

The previous prime is 102543029. The next prime is 102543053. The reversal of 102543042 is 240345201.

It is a super-2 number, since 2×102543042² = 21030150925227528, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29917 + ... + 33167.

It is an arithmetic number, because the mean of its divisors is an integer number (7336512).

Almost surely, 2^102543042 is an apocalyptic number.

102543042 is an abundant number, since it is smaller than the sum of its proper divisors (132225342).

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

102543042 is a wasteful number, since it uses less digits than its factorization.

102543042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4014.

The product of its (nonzero) digits is 960, while the sum is 21.

The square root of 102543042 is about 10126.3538354138. The cubic root of 102543042 is about 468.0605791258.

Adding to 102543042 its reverse (240345201), we get a palindrome (342888243).

The spelling of 102543042 in words is "one hundred two million, five hundred forty-three thousand, forty-two".