102940047 has 24 divisors (see below), whose sum is σ = 170205984. Its totient is φ = 58728384.

The previous prime is 102940039. The next prime is 102940069. The reversal of 102940047 is 740049201.

It is a happy number.

It is not a de Polignac number, because 102940047 - 2³ = 102940039 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 102940047.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102940027) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 63013 + ... + 64625.

It is an arithmetic number, because the mean of its divisors is an integer number (7091916).

Almost surely, 2^102940047 is an apocalyptic number.

102940047 is a deficient number, since it is larger than the sum of its proper divisors (67265937).

102940047 is a wasteful number, since it uses less digits than its factorization.

102940047 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2639 (or 2636 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 27.

The square root of 102940047 is about 10145.9374628469. The cubic root of 102940047 is about 468.6638480604.

Adding to 102940047 its reverse (740049201), we get a palindrome (842989248).

The spelling of 102940047 in words is "one hundred two million, nine hundred forty thousand, forty-seven".