210102740 has 12 divisors (see below), whose sum is σ = 441215796. Its totient is φ = 84041088.

The previous prime is 210102713. The next prime is 210102743. The reversal of 210102740 is 47201012.

210102740 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 49168144 + 160934596 = 7012^2 + 12686^2 .

It is a super-2 number, since 2×210102740² = 88286322711015200, which contains 22 as substring.

It is a nialpdrome in base 11.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210102743) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5252549 + ... + 5252588.

It is an arithmetic number, because the mean of its divisors is an integer number (36767983).

Almost surely, 2^210102740 is an apocalyptic number.

210102740 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

210102740 is an abundant number, since it is smaller than the sum of its proper divisors (231113056).

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

210102740 is a wasteful number, since it uses less digits than its factorization.

210102740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10505146 (or 10505144 counting only the distinct ones).

The product of its (nonzero) digits is 112, while the sum is 17.

The square root of 210102740 is about 14494.9211795028. The cubic root of 210102740 is about 594.4891125746.

Adding to 210102740 its reverse (47201012), we get a palindrome (257303752).

The spelling of 210102740 in words is "two hundred ten million, one hundred two thousand, seven hundred forty".