102542134 has 4 divisors (see below), whose sum is σ = 153813204. Its totient is φ = 51271066.

The previous prime is 102542131. The next prime is 102542161. The reversal of 102542134 is 431245201.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 431245201 = 10069 ⋅42829.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102542131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25635532 + ... + 25635535.

It is an arithmetic number, because the mean of its divisors is an integer number (38453301).

Almost surely, 2^102542134 is an apocalyptic number.

102542134 is a deficient number, since it is larger than the sum of its proper divisors (51271070).

102542134 is an equidigital number, since it uses as much as digits as its factorization.

102542134 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51271069.

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 102542134 is about 10126.3090018032. The cubic root of 102542134 is about 468.0591975913.

Adding to 102542134 its reverse (431245201), we get a palindrome (533787335).

The spelling of 102542134 in words is "one hundred two million, five hundred forty-two thousand, one hundred thirty-four".