102040813 has 8 divisors (see below), whose sum is σ = 117133632. Its totient is φ = 87076896.

The previous prime is 102040801. The next prime is 102040843. The reversal of 102040813 is 318040201.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 102040813 - 2²¹ = 99943661 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102040843) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30520 + ... + 33697.

It is an arithmetic number, because the mean of its divisors is an integer number (14641704).

Almost surely, 2^102040813 is an apocalyptic number.

It is an amenable number.

102040813 is a deficient number, since it is larger than the sum of its proper divisors (15092819).

102040813 is an equidigital number, since it uses as much as digits as its factorization.

102040813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64451.

The product of its (nonzero) digits is 192, while the sum is 19.

The square root of 102040813 is about 10101.5252808672. The cubic root of 102040813 is about 467.2951820919.

The spelling of 102040813 in words is "one hundred two million, forty thousand, eight hundred thirteen".