102140045 has 16 divisors (see below), whose sum is σ = 141153408. Its totient is φ = 69501120.

The previous prime is 102140041. The next prime is 102140057. The reversal of 102140045 is 540041201.

It is not a de Polignac number, because 102140045 - 2² = 102140041 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102140041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6554 + ... + 15723.

It is an arithmetic number, because the mean of its divisors is an integer number (8822088).

Almost surely, 2^102140045 is an apocalyptic number.

It is an amenable number.

102140045 is a deficient number, since it is larger than the sum of its proper divisors (39013363).

102140045 is a wasteful number, since it uses less digits than its factorization.

102140045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22420.

The product of its (nonzero) digits is 160, while the sum is 17.

The square root of 102140045 is about 10106.4358208025. The cubic root of 102140045 is about 467.4466104300.

Adding to 102140045 its reverse (540041201), we get a palindrome (642181246).

The spelling of 102140045 in words is "one hundred two million, one hundred forty thousand, forty-five".