102123770 has 16 divisors (see below), whose sum is σ = 210083328. Its totient is φ = 35013840.

The previous prime is 102123767. The next prime is 102123787. The reversal of 102123770 is 77321201.

It is a Curzon 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 in 7 ways as a sum of consecutive naturals, for example, 729386 + ... + 729525.

It is an arithmetic number, because the mean of its divisors is an integer number (13130208).

Almost surely, 2^102123770 is an apocalyptic number.

102123770 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

102123770 is an abundant number, since it is smaller than the sum of its proper divisors (107959558).

102123770 is a wasteful number, since it uses less digits than its factorization.

102123770 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1458925.

The product of its (nonzero) digits is 588, while the sum is 23.

The square root of 102123770 is about 10105.6306087250. The cubic root of 102123770 is about 467.4217814556.

Adding to 102123770 its reverse (77321201), we get a palindrome (179444971).

The spelling of 102123770 in words is "one hundred two million, one hundred twenty-three thousand, seven hundred seventy".