122820410 has 32 divisors (see below), whose sum is σ = 234649872. Its totient is φ = 46126080.

The previous prime is 122820409. The next prime is 122820469. The reversal of 122820410 is 14028221.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 117007489 + 5812921 = 10817^2 + 2411^2 .

It is a super-2 number, since 2×122820410² = 30169706225136200, which contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 111824 + ... + 112916.

Almost surely, 2^122820410 is an apocalyptic number.

122820410 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

122820410 is a deficient number, since it is larger than the sum of its proper divisors (111829462).

122820410 is a wasteful number, since it uses less digits than its factorization.

122820410 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1778.

The product of its (nonzero) digits is 256, while the sum is 20.

The square root of 122820410 is about 11082.4370063628. The cubic root of 122820410 is about 497.0768233815.

Adding to 122820410 its reverse (14028221), we get a palindrome (136848631).

The spelling of 122820410 in words is "one hundred twenty-two million, eight hundred twenty thousand, four hundred ten".