153121404 has 12 divisors (see below), whose sum is σ = 357283304. Its totient is φ = 51040464.

The previous prime is 153121403. The next prime is 153121417. The reversal of 153121404 is 404121351.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (153121403) 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, 6380047 + ... + 6380070.

Almost surely, 2^153121404 is an apocalyptic number.

It is an amenable number.

153121404 is an abundant number, since it is smaller than the sum of its proper divisors (204161900).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

153121404 is a wasteful number, since it uses less digits than its factorization.

153121404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12760124 (or 12760122 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 21.

The square root of 153121404 is about 12374.2233695695. The cubic root of 153121404 is about 534.9895523042.

Adding to 153121404 its reverse (404121351), we get a palindrome (557242755).

The spelling of 153121404 in words is "one hundred fifty-three million, one hundred twenty-one thousand, four hundred four".