102021854 has 16 divisors (see below), whose sum is σ = 167379696. Its totient is φ = 46252800.

The previous prime is 102021847. The next prime is 102021889. The reversal of 102021854 is 458120201.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2894 + ... + 14574.

It is an arithmetic number, because the mean of its divisors is an integer number (10461231).

Almost surely, 2^102021854 is an apocalyptic number.

102021854 is a deficient number, since it is larger than the sum of its proper divisors (65357842).

102021854 is a wasteful number, since it uses less digits than its factorization.

102021854 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12091.

The product of its (nonzero) digits is 640, while the sum is 23.

The square root of 102021854 is about 10100.5868146361. The cubic root of 102021854 is about 467.2662394304.

The spelling of 102021854 in words is "one hundred two million, twenty-one thousand, eight hundred fifty-four".