102049078 has 4 divisors (see below), whose sum is σ = 153073620. Its totient is φ = 51024538.

The previous prime is 102049069. The next prime is 102049097. The reversal of 102049078 is 870940201.

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

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 a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25512268 + ... + 25512271.

It is an arithmetic number, because the mean of its divisors is an integer number (38268405).

Almost surely, 2^102049078 is an apocalyptic number.

102049078 is a deficient number, since it is larger than the sum of its proper divisors (51024542).

102049078 is an equidigital number, since it uses as much as digits as its factorization.

102049078 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51024541.

The product of its (nonzero) digits is 4032, while the sum is 31.

The square root of 102049078 is about 10101.9343692186. The cubic root of 102049078 is about 467.3077982543.

Adding to 102049078 its reverse (870940201), we get a palindrome (972989279).

The spelling of 102049078 in words is "one hundred two million, forty-nine thousand, seventy-eight".