102145406 has 16 divisors (see below), whose sum is σ = 175944960. Its totient is φ = 43985880.

The previous prime is 102145331. The next prime is 102145451. The reversal of 102145406 is 604541201.

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, 121766 + ... + 122601.

It is an arithmetic number, because the mean of its divisors is an integer number (10996560).

Almost surely, 2^102145406 is an apocalyptic number.

102145406 is a deficient number, since it is larger than the sum of its proper divisors (73799554).

102145406 is a wasteful number, since it uses less digits than its factorization.

102145406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 244399.

The product of its (nonzero) digits is 960, while the sum is 23.

The square root of 102145406 is about 10106.7010443567. The cubic root of 102145406 is about 467.4547885396.

Adding to 102145406 its reverse (604541201), we get a palindrome (706686607).

The spelling of 102145406 in words is "one hundred two million, one hundred forty-five thousand, four hundred six".