102512164345442 has 8 divisors (see below), whose sum is σ = 153832936574316. Its totient is φ = 51234518820672.

The previous prime is 102512164345351. The next prime is 102512164345453. The reversal of 102512164345442 is 244543461215201.

It can be written as a sum of positive squares in 2 ways, for example, as 102069820967521 + 442343377921 = 10102961^2 + 665089^2 .

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 = 102512164345393 and 102512164345402.

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, 10781670083 + ... + 10781679590.

Almost surely, 2^{102512164345442} is an apocalyptic number.

102512164345442 is a deficient number, since it is larger than the sum of its proper divisors (51320772228874).

102512164345442 is a wasteful number, since it uses less digits than its factorization.

102512164345442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21563352052.

The product of its (nonzero) digits is 921600, while the sum is 44.

The spelling of 102512164345442 in words is "one hundred two trillion, five hundred twelve billion, one hundred sixty-four million, three hundred forty-five thousand, four hundred forty-two".