103121004 has 72 divisors (see below), whose sum is σ = 285293568. Its totient is φ = 28369440.

The previous prime is 103120981. The next prime is 103121023. The reversal of 103121004 is 400121301.

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 an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 518097 + ... + 518295.

Almost surely, 2^103121004 is an apocalyptic number.

103121004 is a gapful number since it is divisible by the number (14) 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 103121004, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (142646784).

103121004 is an abundant number, since it is smaller than the sum of its proper divisors (182172564).

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

103121004 is a wasteful number, since it uses less digits than its factorization.

103121004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 443 (or 242 counting only the distinct ones).

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

The square root of 103121004 is about 10154.8512544498. The cubic root of 103121004 is about 468.9383067076.

Adding to 103121004 its reverse (400121301), we get a palindrome (503242305).

The spelling of 103121004 in words is "one hundred three million, one hundred twenty-one thousand, four".