102542434 has 8 divisors (see below), whose sum is σ = 159117660. Its totient is φ = 49503216.

The previous prime is 102542423. The next prime is 102542471. The reversal of 102542434 is 434245201.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 100942209 + 1600225 = 10047^2 + 1265^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 102542399 and 102542408.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 883929 + ... + 884044.

Almost surely, 2^102542434 is an apocalyptic number.

102542434 is a deficient number, since it is larger than the sum of its proper divisors (56575226).

102542434 is a wasteful number, since it uses less digits than its factorization.

102542434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1768004.

The product of its (nonzero) digits is 3840, while the sum is 25.

The square root of 102542434 is about 10126.3238146921. The cubic root of 102542434 is about 468.0596540463.

Adding to 102542434 its reverse (434245201), we get a palindrome (536787635).

The spelling of 102542434 in words is "one hundred two million, five hundred forty-two thousand, four hundred thirty-four".