121604413 has 16 divisors (see below), whose sum is σ = 144460800. Its totient is φ = 100166400.

The previous prime is 121604411. The next prime is 121604423. The reversal of 121604413 is 314406121.

It is a cyclic number.

It is not a de Polignac number, because 121604413 - 2¹ = 121604411 is a prime.

It is a super-2 number, since 2×121604413² = 29575266522149138, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121604411) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30453 + ... + 34213.

It is an arithmetic number, because the mean of its divisors is an integer number (9028800).

Almost surely, 2^121604413 is an apocalyptic number.

It is an amenable number.

121604413 is a deficient number, since it is larger than the sum of its proper divisors (22856387).

121604413 is a wasteful number, since it uses less digits than its factorization.

121604413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3948.

The product of its (nonzero) digits is 576, while the sum is 22.

The square root of 121604413 is about 11027.4390952750. The cubic root of 121604413 is about 495.4309249545.

The spelling of 121604413 in words is "one hundred twenty-one million, six hundred four thousand, four hundred thirteen".