102787047 has 12 divisors (see below), whose sum is σ = 161967624. Its totient is φ = 62295120.

The previous prime is 102787043. The next prime is 102787051. The reversal of 102787047 is 740787201.

It is an interprime number because it is at equal distance from previous prime (102787043) and next prime (102787051).

It is not a de Polignac number, because 102787047 - 2² = 102787043 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102787043) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 519028 + ... + 519225.

It is an arithmetic number, because the mean of its divisors is an integer number (13497302).

Almost surely, 2^102787047 is an apocalyptic number.

102787047 is a deficient number, since it is larger than the sum of its proper divisors (59180577).

102787047 is a wasteful number, since it uses less digits than its factorization.

102787047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1038270 (or 1038267 counting only the distinct ones).

The product of its (nonzero) digits is 21952, while the sum is 36.

The square root of 102787047 is about 10138.3946954141. The cubic root of 102787047 is about 468.4315409211.

The spelling of 102787047 in words is "one hundred two million, seven hundred eighty-seven thousand, forty-seven".