130121400 has 96 divisors (see below), whose sum is σ = 427137840. Its totient is φ = 32655360.

The previous prime is 130121393. The next prime is 130121401. The reversal of 130121400 is 4121031.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (130121401) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3822 + ... + 16578.

Almost surely, 2^130121400 is an apocalyptic number.

130121400 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 130121400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (213568920).

130121400 is an abundant number, since it is smaller than the sum of its proper divisors (297016440).

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

130121400 is a wasteful number, since it uses less digits than its factorization.

130121400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12793 (or 12784 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 12.

The square root of 130121400 is about 11407.0767508595. The cubic root of 130121400 is about 506.7373420185.

Adding to 130121400 its reverse (4121031), we get a palindrome (134242431).

The spelling of 130121400 in words is "one hundred thirty million, one hundred twenty-one thousand, four hundred".