120823810 has 8 divisors (see below), whose sum is σ = 217482876. Its totient is φ = 48329520.

The previous prime is 120823783. The next prime is 120823817. The reversal of 120823810 is 18328021.

It can be written as a sum of positive squares in 2 ways, for example, as 118004769 + 2819041 = 10863^2 + 1679^2 .

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

It is a super-2 number, since 2×120823810² = 29196786125832200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (120823817) 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, 6041181 + ... + 6041200.

Almost surely, 2^120823810 is an apocalyptic number.

120823810 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

120823810 is a deficient number, since it is larger than the sum of its proper divisors (96659066).

120823810 is a wasteful number, since it uses less digits than its factorization.

120823810 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12082388.

The product of its (nonzero) digits is 768, while the sum is 25.

The square root of 120823810 is about 10991.9884461366. The cubic root of 120823810 is about 494.3685585213.

The spelling of 120823810 in words is "one hundred twenty million, eight hundred twenty-three thousand, eight hundred ten".