102440547 has 24 divisors (see below), whose sum is σ = 162150768. Its totient is φ = 61804800.

The previous prime is 102440543. The next prime is 102440561. The reversal of 102440547 is 745044201.

It is not a de Polignac number, because 102440547 - 2² = 102440543 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 102440547.

It is not an unprimeable number, because it can be changed into a prime (102440543) 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, 20847 + ... + 25287.

It is an arithmetic number, because the mean of its divisors is an integer number (6756282).

Almost surely, 2^102440547 is an apocalyptic number.

102440547 is a deficient number, since it is larger than the sum of its proper divisors (59710221).

102440547 is a wasteful number, since it uses less digits than its factorization.

102440547 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4691 (or 4688 counting only the distinct ones).

The product of its (nonzero) digits is 4480, while the sum is 27.

The square root of 102440547 is about 10121.2917653825. The cubic root of 102440547 is about 467.9045800422.

Adding to 102440547 its reverse (745044201), we get a palindrome (847484748).

The spelling of 102440547 in words is "one hundred two million, four hundred forty thousand, five hundred forty-seven".