1534121400 has 144 divisors (see below), whose sum is σ = 5532335640. Its totient is φ = 350649600.

The previous prime is 1534121399. The next prime is 1534121507. The reversal of 1534121400 is 41214351.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is an unprimeable number.

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 35 ways as a sum of consecutive naturals, for example, 3310 + ... + 55490.

Almost surely, 2^1534121400 is an apocalyptic number.

1534121400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1534121400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2766167820).

1534121400 is an abundant number, since it is smaller than the sum of its proper divisors (3998214240).

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

1534121400 is a wasteful number, since it uses less digits than its factorization.

1534121400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52214 (or 52198 counting only the distinct ones).

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

The square root of 1534121400 is about 39167.8618257367. The cubic root of 1534121400 is about 1153.3290806604.

Adding to 1534121400 its reverse (41214351), we get a palindrome (1575335751).

The spelling of 1534121400 in words is "one billion, five hundred thirty-four million, one hundred twenty-one thousand, four hundred".