102412858 has 4 divisors (see below), whose sum is σ = 153619290. Its totient is φ = 51206428.

The previous prime is 102412841. The next prime is 102412867. The reversal of 102412858 is 858214201.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 92217609 + 10195249 = 9603^2 + 3193^2 .

It is a super-3 number, since 3×102412858³ (a number of 25 digits) contains 333 as substring.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

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 as a sum of consecutive naturals, namely, 25603213 + ... + 25603216.

Almost surely, 2^102412858 is an apocalyptic number.

102412858 is a deficient number, since it is larger than the sum of its proper divisors (51206432).

102412858 is an equidigital number, since it uses as much as digits as its factorization.

102412858 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51206431.

The product of its (nonzero) digits is 5120, while the sum is 31.

The square root of 102412858 is about 10119.9238139425. The cubic root of 102412858 is about 467.8624190758.

The spelling of 102412858 in words is "one hundred two million, four hundred twelve thousand, eight hundred fifty-eight".