2151241404 has 192 divisors, whose sum is σ = 5982584832. Its totient is φ = 595353600.

The previous prime is 2151241403. The next prime is 2151241409. The reversal of 2151241404 is 4041421512.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2151241403) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 11262949 + ... + 11263139.

It is an arithmetic number, because the mean of its divisors is an integer number (31159296).

Almost surely, 2^2151241404 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2151241404, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2991292416).

2151241404 is an abundant number, since it is smaller than the sum of its proper divisors (3831343428).

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

2151241404 is a wasteful number, since it uses less digits than its factorization.

2151241404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 396 (or 394 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 24.

The square root of 2151241404 is about 46381.4769493167. The cubic root of 2151241404 is about 1290.9112412611.

Adding to 2151241404 its reverse (4041421512), we get a palindrome (6192662916).

The spelling of 2151241404 in words is "two billion, one hundred fifty-one million, two hundred forty-one thousand, four hundred four".