102156446 has 16 divisors (see below), whose sum is σ = 176244576. Its totient is φ = 43501536.

The previous prime is 102156443. The next prime is 102156449. The reversal of 102156446 is 644651201.

It is an interprime number because it is at equal distance from previous prime (102156443) and next prime (102156449).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102156443) by changing a digit.

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, 21041 + ... + 25436.

It is an arithmetic number, because the mean of its divisors is an integer number (11015286).

Almost surely, 2^102156446 is an apocalyptic number.

102156446 is a deficient number, since it is larger than the sum of its proper divisors (74088130).

102156446 is a wasteful number, since it uses less digits than its factorization.

102156446 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46643.

The product of its (nonzero) digits is 5760, while the sum is 29.

The square root of 102156446 is about 10107.2472018844. The cubic root of 102156446 is about 467.4716289607.

It can be divided in two parts, 10215 and 6446, that added together give a palindrome (16661).

The spelling of 102156446 in words is "one hundred two million, one hundred fifty-six thousand, four hundred forty-six".