102561740 has 24 divisors (see below), whose sum is σ = 218913072. Its totient is φ = 40351680.

The previous prime is 102561709. The next prime is 102561757. The reversal of 102561740 is 47165201.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40814 + ... + 43253.

It is an arithmetic number, because the mean of its divisors is an integer number (9121378).

Almost surely, 2^102561740 is an apocalyptic number.

102561740 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

102561740 is an abundant number, since it is smaller than the sum of its proper divisors (116351332).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

102561740 is a wasteful number, since it uses less digits than its factorization.

102561740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84137 (or 84135 counting only the distinct ones).

The product of its (nonzero) digits is 1680, while the sum is 26.

The square root of 102561740 is about 10127.2770279083. The cubic root of 102561740 is about 468.0890265779.

It can be divided in two parts, 102561 and 740, that added together give a palindrome (103301).

The spelling of 102561740 in words is "one hundred two million, five hundred sixty-one thousand, seven hundred forty".