102042342 has 20 divisors (see below), whose sum is σ = 228650796. Its totient is φ = 34014060.

The previous prime is 102042299. The next prime is 102042349. The reversal of 102042342 is 243240201.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102042349) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 314784 + ... + 315107.

Almost surely, 2^102042342 is an apocalyptic number.

102042342 is an abundant number, since it is smaller than the sum of its proper divisors (126608454).

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

102042342 is an equidigital number, since it uses as much as digits as its factorization.

102042342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 629905 (or 629896 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 102042342 is about 10101.6009622238. The cubic root of 102042342 is about 467.2975160951.

Adding to 102042342 its reverse (243240201), we get a palindrome (345282543).

The spelling of 102042342 in words is "one hundred two million, forty-two thousand, three hundred forty-two".