130121004 has 48 divisors (see below), whose sum is σ = 333946368. Its totient is φ = 39183168.

The previous prime is 130120997. The next prime is 130121011. The reversal of 130121004 is 400121031.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (130120997) and next prime (130121011).

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

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1542 + ... + 16205.

It is an arithmetic number, because the mean of its divisors is an integer number (6957216).

Almost surely, 2^130121004 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 130121004, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (166973184).

130121004 is an abundant number, since it is smaller than the sum of its proper divisors (203825364).

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

130121004 is a wasteful number, since it uses less digits than its factorization.

130121004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17814 (or 17812 counting only the distinct ones).

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

The square root of 130121004 is about 11407.0593932003. The cubic root of 130121004 is about 506.7368279647.

Adding to 130121004 its reverse (400121031), we get a palindrome (530242035).

The spelling of 130121004 in words is "one hundred thirty million, one hundred twenty-one thousand, four".