102407745 has 48 divisors (see below), whose sum is σ = 190753920. Its totient is φ = 46717440.

The previous prime is 102407743. The next prime is 102407797. The reversal of 102407745 is 547704201.

It is not a de Polignac number, because 102407745 - 2¹ = 102407743 is a prime.

It is not an unprimeable number, because it can be changed into a prime (102407741) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 29196 + ... + 32514.

It is an arithmetic number, because the mean of its divisors is an integer number (3974040).

Almost surely, 2^102407745 is an apocalyptic number.

102407745 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

102407745 is a deficient number, since it is larger than the sum of its proper divisors (88346175).

102407745 is a wasteful number, since it uses less digits than its factorization.

102407745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3366 (or 3355 counting only the distinct ones).

The product of its (nonzero) digits is 7840, while the sum is 30.

The square root of 102407745 is about 10119.6711903105. The cubic root of 102407745 is about 467.8546328778.

The spelling of 102407745 in words is "one hundred two million, four hundred seven thousand, seven hundred forty-five".