121613410 has 16 divisors (see below), whose sum is σ = 231781176. Its totient is φ = 45783808.

The previous prime is 121613381. The next prime is 121613411. The reversal of 121613410 is 14316121.

It can be written as a sum of positive squares in 4 ways, for example, as 99022401 + 22591009 = 9951^2 + 4753^2 .

It is not an unprimeable number, because it can be changed into a prime (121613411) 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, 357517 + ... + 357856.

Almost surely, 2^121613410 is an apocalyptic number.

121613410 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121613410 is a deficient number, since it is larger than the sum of its proper divisors (110167766).

121613410 is a wasteful number, since it uses less digits than its factorization.

121613410 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 715397.

The product of its (nonzero) digits is 144, while the sum is 19.

The square root of 121613410 is about 11027.8470246916. The cubic root of 121613410 is about 495.4431429380.

Adding to 121613410 its reverse (14316121), we get a palindrome (135929531).

The spelling of 121613410 in words is "one hundred twenty-one million, six hundred thirteen thousand, four hundred ten".